Mersenne Digest Thursday, June 8 2000 Volume 01 : Number 744 ---------------------------------------------------------------------- Date: Tue, 6 Jun 2000 22:18:42 +0200 From: =?iso-8859-1?Q?Ignacio_Larrosa_Ca=F1estro?= <[EMAIL PROTECTED]> Subject: Mersenne: RV: Error en Primenet Manual Testing Forms George: I get the message 'The page cannot be displayed' sfter send results to Primenet. Also, I cannot get the personal account report. Greetings, Ignacio Larrosa Ca�estro A Coru�a (Espa�a) [EMAIL PROTECTED] _________________________________________________________________ Unsubscribe & list info -- http://www.scruz.net/~luke/signup.htm Mersenne Prime FAQ -- http://www.tasam.com/~lrwiman/FAQ-mers ------------------------------ Date: Tue, 06 Jun 2000 13:35:00 -0700 From: Eric Hahn <[EMAIL PROTECTED]> Subject: Mersenne: Online P-1 Database Greetings all, I've made a few modifications to the P-1 database webpages. In addition, I'm providing a new address for it, since some people have been having trouble accessing it. For those who would like a short address: http://mersenne.wackye.com For those who've been having trouble, the long address: http://www.mcn.org/2/ehahn/mersenne/mersenne.html Eric _________________________________________________________________ Unsubscribe & list info -- http://www.scruz.net/~luke/signup.htm Mersenne Prime FAQ -- http://www.tasam.com/~lrwiman/FAQ-mers ------------------------------ Date: Tue, 6 Jun 2000 22:02:49 +0100 From: Barry Stokes <[EMAIL PROTECTED]> Subject: Mersenne: What's happening? - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 http://mersenne.org/primenet/ftops.txt contains this: Mersenne PrimeNet Server 4.0 (Build 4.0.031) Top Factoring Producers Report 06 Jun 2000 20:04 (Jun 6 2000 1:04PM Pacific) This report is updated every 60 minutes Rank Account ID LL P90* Exponents Fact.P90 Exponents P90 CPU CPU yrs LL Tested CPU yrs* w/ Factor hrs/day - - ----- -------------- ------- --------- -------- --------- - - -------- DB-Library: DBPROCESS is dead or not enabled. DB-Library: DBPROCESS is dead or not enabled. DB-Library: DBPROCESS is dead or not enabled. I assume that this is a problem? I also cannot access my personal stats. Anyone else experiencing this? - -----BEGIN PGP SIGNATURE----- Version: PGP 6.0.2i iQA/AwUBOT1m+TmWaVGyUt3iEQJyPQCeJV5nDD7jOCpHz6LazGL1qyON1iAAnRqF TuH56235MdxtMVKAJG42Is0i =GSJY - -----END PGP SIGNATURE----- _________________________________________________________________ Unsubscribe & list info -- http://www.scruz.net/~luke/signup.htm Mersenne Prime FAQ -- http://www.tasam.com/~lrwiman/FAQ-mers ------------------------------ Date: Tue, 06 Jun 2000 23:37:35 +0200 From: Harald Tveit Alvestrand <[EMAIL PROTECTED]> Subject: Re: Mersenne: Clarification on M#39, M#40, M727... At 10:52 06.06.2000 -0700, Eric Hahn wrote: >Greetings all, > > From the responses I've gotten, I suppose I've confused most >people, or left them in the dark :( I guess I thought the >subject would explain most things.... > > First, for those who've asked the question, I'm not storing >the 1TB or so of data personally, which is part of the reason >I need to know some ideas, etc. on what to post, if anything. >I'll need to request the specific data desired... > > Second, the type of information I've received concerning the >statistical data I've received (and is contained in the data), >is of a statistical probability nature. For example(s): > M14,989,627 has a 93.42% probability of having a 53-bit factor. > M14,999,953 has a 9.31% probability of having a 53-bit factor. aiming solely at getting rid of more exponents: it seems to me that those who love factoring should get the list of all numbers with a high probability of an N-bit factor, where N is beyond the current default limits for Prime95, but within the reach of the program. I'd sort the list by descending probability and put the first Mbyte(s?) up for FTP.... that should be enough to get rid of a few thousand exponents in a hurry. It would be a bigger hack, to both the Primenet server and Prime95, to mark the "interesting" candidates for factoring to N bits rather than the default when they are handed out for factoring. So I guess that's a later thing. Harald - -- Harald Tveit Alvestrand, EDB Maxware, Norway [EMAIL PROTECTED] _________________________________________________________________ Unsubscribe & list info -- http://www.scruz.net/~luke/signup.htm Mersenne Prime FAQ -- http://www.tasam.com/~lrwiman/FAQ-mers ------------------------------ Date: Tue, 6 Jun 2000 18:31:59 EDT From: [EMAIL PROTECTED] Subject: Mersenne: Yes... Terabytes! << (at least 100 DVDs worth of data -- compressed!) >> Holy cow! <<There is a 81.62% probability of a Mersenne Prime between M6,957,583 and M7,001,681 There is a 84.17% probability of a Mersenne Prime between M6,923,117 and M7,005,181 There is a 93.01% probability of a Mersenne Prime between M6,898,967 and M7,018,511 NOTE: These are just examples that I've come up with to give an idea of the nature of the data (which I used previously known information to create).>> How did you generate this data in the first place? Stephan L. _________________________________________________________________ Unsubscribe & list info -- http://www.scruz.net/~luke/signup.htm Mersenne Prime FAQ -- http://www.tasam.com/~lrwiman/FAQ-mers ------------------------------ Date: Wed, 7 Jun 2000 01:59:51 +0200 (CEST) From: Henrik Olsen <[EMAIL PROTECTED]> Subject: Re: Mersenne: Clarification on M#39, M#40, M727... On Tue, 6 Jun 2000, Eric Hahn wrote: > > Second, the type of information I've received concerning the > statistical data I've received (and is contained in the data), > is of a statistical probability nature. For example(s): > M14,989,627 has a 93.42% probability of having a 53-bit factor. Did you remember to exclude the fact that M14,989,627 HAS a 53-bit factor from the dataset used to calculate this probability? > M14,999,953 has a 9.31% probability of having a 53-bit factor. > > M101 has a 89.17% probability of having 2 factors. > M101 has a 73.25% probability of having highly compositable factors. When getting to this probability, was the datapoint that M101 HAS 2 factors removed, or was it included in the statistical set used to calculate this probability? > M113 has a 92.36% probability of having 5 factors. > M113 has a 64.03% probability of having highly compositable factors. When getting to this probability, was the datapoint that M113 HAS 5 factors removed, or was it included in the statistical set used to calculate this probability? > NOTE: These are just examples that I've come up with to give an > idea of the nature of the data (which I used previously known > information to create). I don't even know if the data is stored > in such a manner or is interpreted to this manner... What's the algorithm used to come up with these probabilities? Remember that it's very easy to accidentally fool yourself into seeing patterns where none are, unless you're very careful not to use preexisting knowledge for generating the predictions you test agains it. > Since these are statistical probablilities, I can't even > guarantee the accuracy of the data. However, in a test run > that was made to validate the data (not by me, mind you), Ah, sorry, the questions I ask you is for the people who did the run then, but they're still relevant. > approx. 436 exponents that had high probability to have a > 53- or 54-bit factor was tested and 401 had a 53- or 54-bit > factor found! There's no telling how many exponents in the > range tested have a factor of this size which wasn't tested > due to a lower probability... > > One last thing... The data is based on current information > as of 4-6 weeks ago, some of which may have changed. It > "predicts" information that isn't known as of that date, such as > # of factors in M727 and M751, range where M#39 and M#40 is, > etc. (which was why I had the subject I did). > > If anybody has further questions or is still confused, let > me know and I'll try to clarify some more... > > Again, the ideas, suggestions, comments, etc. I'm looking for > covers these areas and ???: > 1) Should I post a *tiny* fragment of this information? > 2) What information should I post, if I do? > 3) Would it be beneficial to the overall effort? > 4) Would it divert resources that could be used better otherwise? > 5) Could it cause problems with regard to that "p" hunting term? > 6) Anything else?? > > Eric > > > _________________________________________________________________ > Unsubscribe & list info -- http://www.scruz.net/~luke/signup.htm > Mersenne Prime FAQ -- http://www.tasam.com/~lrwiman/FAQ-mers > - -- Henrik Olsen, Dawn Solutions I/S URL=http://www.iaeste.dk/~henrik/ What is worth doing is worth the trouble of asking somebody to do it. The Devil's Dictionary, Ambrose Bierce. _________________________________________________________________ Unsubscribe & list info -- http://www.scruz.net/~luke/signup.htm Mersenne Prime FAQ -- http://www.tasam.com/~lrwiman/FAQ-mers ------------------------------ Date: Tue, 6 Jun 2000 22:55:19 -0500 From: "Levi Broderick" <[EMAIL PROTECTED]> Subject: Mersenne: Entropia Servers Yeah.. I kinda also noticed that the entropia.com servers have been wacky today. Something strange, though -- I was playing around with URL's and this can get you your account information: http://www.mersenne.org/cgi-bin/primenet_report.pl?UserID=*HIDDEN*&UserPW=*H IDDEN* (http://mersenne.org/ips/accounts.html) Kinda surprised that this info was up on the mersenne server; I always thought it and the entropia servers were located separately. Oh well, for those of you who wanted to check your account info, here's at least a temporary solution. :) ~ Levi _________________________________________________________________ Unsubscribe & list info -- http://www.scruz.net/~luke/signup.htm Mersenne Prime FAQ -- http://www.tasam.com/~lrwiman/FAQ-mers ------------------------------ Date: Wed, 07 Jun 2000 00:37:22 -0700 From: Eric Hahn <[EMAIL PROTECTED]> Subject: Re: Mersenne: Entropia Servers Levi Broderick wrote: >Yeah.. I kinda also noticed that the entropia.com servers have >been wacky today. Something strange, though -- I was playing >around with URL's and this can get you your account information: > >http://www.mersenne.org/cgi-bin/primenet_report.pl?UserID=*HIDDEN*&UserPW=* HIDDEN* >(http://mersenne.org/ips/accounts.html) Ah! So it appears that the transition of the cgi(s) from Entropia.com to Mersenne.org have finally been made.... I had understand this would eventually happen. >Kinda surprised that this info was up on the mersenne server; >I always thought it and the entropia servers were located >separately. Oh well, for those of you who wanted to check >your account info, here's at least a temporary solution. :) As I recall, George had posted something several months ago about entropia.com hosting the GIMPS domain (mersenne.org) from that point on. I also remember something about a transition of the PrimeNet server from the Entropia to the Mersenne domain. As of 2 or 3 weeks ago, everything had seemed to be moved over expect the cgi(s). (As of last Friday, the URL(s) requiring cgi (including the one above) did not work if they pointed to mersenne.org) >From what it appears you must now have mersenne.org instead of entropia.com in *any* URLs that point to the PrimeNet server for complete access. Eric _________________________________________________________________ Unsubscribe & list info -- http://www.scruz.net/~luke/signup.htm Mersenne Prime FAQ -- http://www.tasam.com/~lrwiman/FAQ-mers ------------------------------ Date: Wed, 07 Jun 2000 06:14:38 -0700 From: Stefan Struiker <[EMAIL PROTECTED]> Subject: Mersenne: Manual Testing Forms Still "Broken" To All: In the server transition, the Manual Testing Forms still seem to be broken. Can't UNreserve exponents, for example. Best Regards, Stefanovic _________________________________________________________________ Unsubscribe & list info -- http://www.scruz.net/~luke/signup.htm Mersenne Prime FAQ -- http://www.tasam.com/~lrwiman/FAQ-mers ------------------------------ Date: Wed, 07 Jun 2000 07:18:41 -0700 From: Eric Hahn <[EMAIL PROTECTED]> Subject: Re: Mersenne: Manual Testing Forms Still "Broken" Stefan Struiker wrote: >To All: > >In the server transition, the Manual Testing Forms still >seem to be broken. Can't UNreserve exponents, for example. Hmmm.... The manual tests page does appear to post to entropia.com by default. :( One hack around this (until the page is changed) is to save the file to disk, load it into a text editor, find the lines that start with: <form action="http://entropia.com/cgi-bin/.... change these lines to: <form action="http://mersenne.org/cgi-bin/.... Save the file back to disk. Afterwards, load the file back into your browser *from disk*, and fill in the appropriate manual test boxes. Clicking on the "submit" buttons should then perform the task desired correctly. NOTE: Once saved and changed on disk, you don't have to redo the procedure all over again. You can instead just load the previously saved file on disk! On a side not, the thing that bothers me most about the whole thing though, is that no warning came of the time/date the switch would be made, leaving people completely in the dark. You only got a "Page Not Found" error when you attempted to get your info. As I recall, something was said about a warning being issued first the next time something like that was going to happen... Eric _________________________________________________________________ Unsubscribe & list info -- http://www.scruz.net/~luke/signup.htm Mersenne Prime FAQ -- http://www.tasam.com/~lrwiman/FAQ-mers ------------------------------ Date: Wed, 07 Jun 2000 08:06:47 PDT From: "Robert Braunwart" <[EMAIL PROTECTED]> Subject: Mersenne: CPU hours Can anyone give me the formula for computing P90 CPU hours of work from a Mersenne exponent, for LL tests and for factoring? Thanks. - --Bob Braunwart ________________________________________________________________________ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com _________________________________________________________________ Unsubscribe & list info -- http://www.scruz.net/~luke/signup.htm Mersenne Prime FAQ -- http://www.tasam.com/~lrwiman/FAQ-mers ------------------------------ Date: Wed, 07 Jun 2000 12:46:47 EDT From: "Nathan Russell" <[EMAIL PROTECTED]> Subject: Re: Mersenne: Manual Testing Forms Still "Broken" >From: Stefan Struiker <[EMAIL PROTECTED]> >To: [EMAIL PROTECTED] >Subject: Mersenne: Manual Testing Forms Still "Broken" >Date: Wed, 07 Jun 2000 06:14:38 -0700 > >To All: > >In the server transition, the Manual Testing Forms still >seem to be broken. Can't UNreserve exponents, for example. > >Best Regards, >Stefanovic I tried to reply to this earlier, but my school's proxy server was on the fritz. I appologize if it got through and this appears to be a duplicate message. I have been having problems reading some of the PrimeNet "world search status" webpages lately; it appears that they only show exponents through 9.7 M. There used to be certain versions of/addresses for the pages that worked; this is no longer the case, as far as I can tell. I intend to use George's status page until the problem is fixed; I have a good idea of which exponents are assigned to me, as I only have one machine! Nathan ________________________________________________________________________ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com _________________________________________________________________ Unsubscribe & list info -- http://www.scruz.net/~luke/signup.htm Mersenne Prime FAQ -- http://www.tasam.com/~lrwiman/FAQ-mers ------------------------------ Date: Wed, 07 Jun 2000 12:57:05 EDT From: "Nathan Russell" <[EMAIL PROTECTED]> Subject: Re: Mersenne: CPU hours On Wed, 07 Jun 2000 08:06:47 PDT, Robert Braunwart <[EMAIL PROTECTED]> asked: >Can anyone give me the formula for computing P90 CPU hours of work from a >Mersenne exponent, for LL tests and for factoring? IIRC, there is no easy formula for factoring, since smaller exponents actually take longer to factor to a specific depth (there's more candidate factors; see George's math pages). If you have a Pentium Pro or above, you can get a rough idea by taking the time needed by your machine and multiplying it by the clock speed; then divide by about 60 to 70 since PPro-archetecture CPU's are much better at factoring relative to their clock speed. This is my own rule-of-thumb formula, and may have nothing to do with the ones Entropia uses for factoring credit; I suggest that you ask them for that info. For LL testing, head over to the official benchmark page at http://www.mersenne.org/bench.htm and get the per-iteration time for a P90 for the exponent range, or 'runlength', that you are testing. His times are per second, so multiply by the exponent and divide by 3600 for CPU hours, or some large number for CPU years (I don't have a calculator here at school). George's page doesn't presently list a P90, so you might try linear interpolation or use the handy java applet. Happy testing, Nathan Russell ________________________________________________________________________ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com _________________________________________________________________ Unsubscribe & list info -- http://www.scruz.net/~luke/signup.htm Mersenne Prime FAQ -- http://www.tasam.com/~lrwiman/FAQ-mers ------------------------------ Date: Wed, 7 Jun 2000 18:43:20 +0200 From: =?iso-8859-1?Q?Ignacio_Larrosa_Ca=F1estro?= <[EMAIL PROTECTED]> Subject: RE: Mersenne: Manual Testing Forms Still "Broken" I did that modifications yesterday. Now, I get repeatdly the server message "Server busy - please try again in a few moments" when I try to check in results. But I can get my personal account report. Un saludo, Ignacio Larrosa Ca�estro A Coru�a (Espa�a) [EMAIL PROTECTED] - ----- Original Message ----- From: Eric Hahn <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Wednesday, June 07, 2000 4:18 PM Subject: Re: Mersenne: Manual Testing Forms Still "Broken" > Stefan Struiker wrote: > >To All: > > > >In the server transition, the Manual Testing Forms still > >seem to be broken. Can't UNreserve exponents, for example. > > Hmmm.... The manual tests page does appear to post to entropia.com > by default. :( One hack around this (until the page is changed) > is to save the file to disk, load it into a text editor, find the > lines that start with: > <form action="http://entropia.com/cgi-bin/.... > change these lines to: > <form action="http://mersenne.org/cgi-bin/.... > Save the file back to disk. Afterwards, load the file back into > your browser *from disk*, and fill in the appropriate manual test > boxes. Clicking on the "submit" buttons should then perform the > task desired correctly. > NOTE: Once saved and changed on disk, you don't have to redo the > procedure all over again. You can instead just load the previously > saved file on disk! > > On a side not, the thing that bothers me most about the whole > thing though, is that no warning came of the time/date the > switch would be made, leaving people completely in the dark. > You only got a "Page Not Found" error when you attempted to get > your info. As I recall, something was said about a warning > being issued first the next time something like that was going > to happen... > > Eric > > > ____________________________________________________________ _____ > Unsubscribe & list info -- http://www.scruz.net/~luke/signup.htm > Mersenne Prime FAQ -- http://www.tasam.com/~lrwiman/FAQ-mers > _________________________________________________________________ Unsubscribe & list info -- http://www.scruz.net/~luke/signup.htm Mersenne Prime FAQ -- http://www.tasam.com/~lrwiman/FAQ-mers ------------------------------ Date: Thu, 8 Jun 2000 16:27:29 -0400 From: "Willmore, David (VS Central)" <[EMAIL PROTECTED]> Subject: RE: Mersenne: What's happening? Yeah, the manual pages are apparently offline. Will they be back online soon? I have a machine about to 'go dry' (500MHZ Alpha EV6). Help. > -----Original Message----- > From: Barry Stokes [SMTP:[EMAIL PROTECTED]] > Sent: Tuesday, June 06, 2000 4:03 PM > To: [EMAIL PROTECTED] > Subject: Mersenne: What's happening? > > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > > http://mersenne.org/primenet/ftops.txt contains this: > > > Mersenne PrimeNet Server 4.0 (Build 4.0.031) > Top Factoring Producers Report 06 Jun 2000 20:04 (Jun 6 2000 1:04PM > Pacific) > > This report is updated every 60 minutes > > Rank Account ID LL P90* Exponents Fact.P90 Exponents P90 > CPU > CPU yrs LL Tested CPU yrs* w/ Factor > hrs/day > - ----- -------------- ------- --------- -------- --------- > - -------- > DB-Library: DBPROCESS is dead or not enabled. > DB-Library: DBPROCESS is dead or not enabled. > DB-Library: DBPROCESS is dead or not enabled. > > > I assume that this is a problem? I also cannot access my personal > stats. Anyone else experiencing this? > > -----BEGIN PGP SIGNATURE----- > Version: PGP 6.0.2i > > iQA/AwUBOT1m+TmWaVGyUt3iEQJyPQCeJV5nDD7jOCpHz6LazGL1qyON1iAAnRqF > TuH56235MdxtMVKAJG42Is0i > =GSJY > -----END PGP SIGNATURE----- > > > _________________________________________________________________ > Unsubscribe & list info -- http://www.scruz.net/~luke/signup.htm > Mersenne Prime FAQ -- http://www.tasam.com/~lrwiman/FAQ-mers _________________________________________________________________ Unsubscribe & list info -- http://www.scruz.net/~luke/signup.htm Mersenne Prime FAQ -- http://www.tasam.com/~lrwiman/FAQ-mers ------------------------------ End of Mersenne Digest V1 #744 ******************************
