RE: Mersenne: M2161 has a factor

2002-07-19 Thread Hoogendoorn, Sander
Gerry Snyder wrote: M2161 was number 10 on the list of smallest Mersenne numbers with no known factor. Number 14 actually, you forgot the four numbers below 1200. Sander _ Unsubscribe list info --

RE: Mersenne: MPrime as an exponent

2002-07-15 Thread Hoogendoorn, Sander
M(31) is also the first Mersenne prime not to be tested as an exponent in a Mersenne prime as it is 10 digits or over 2 billion, well beyond the current 16mil or even 33mil exponents being tested. Take a look at Tony Forbes page http://www.ltkz.demon.co.uk/ar2/mm61.htm MM31 has 3 known

RE: Mersenne: ECM

2002-04-16 Thread Hoogendoorn, Sander
If trial-factoring has been done up to 2^68... is it possible to skip testing ECM curves for factors up to 15 and/or 20 digits... and go straight to testing ECM curves for digits up to 25 digits??? Personally, I would go straight in at the 25+ digits level. OTOH, if trial factoring has

Mersenne: Task Manager

2001-10-27 Thread Hoogendoorn, Sander
Jud McCranie wrote: On Windows XP ctrl-alt-del shows that information (maybe on Win 2000 too). On both W2K and XP you also have to press the Task Manager Button, or press ctrl-shift-esc to go there right away Sander _

RE: Mersenne: Like missing baby's first step

2001-07-31 Thread Hoogendoorn, Sander
I think it is more the following situatiuon: 95+% done, connecting to prime.net - GET NEW WORK !! - start with new work ! After 5-7% the old workfile gets it's active flag back and will be completed. The work done on the new exponent is either trail factoring or P-1 factoring. Trail

RE: Mersenne: Proth observations

2001-06-27 Thread Hoogendoorn, Sander
Andy Hedges wrote: Anyone have any idea why for k = 659 there are very little primes? In fact for k up to 20 there are none (I haven't found any in this range yet!). This number has bees searched till at least 27 Take a look at http://www.prothsearch.net/rieselsearch.html

RE: Mersenne: Proth observations

2001-06-23 Thread Hoogendoorn, Sander
Brian J. Beesley Wrote: My strategy is: (1) run Proth at medium priority in factoring only mode to eliminate candidates with small factors; For step 1 i use Newpgen. I think this is better configurable then proth in how far or long you want to factor. Don't know which is the fastest of the

RE: Mersenne: Different results

2001-05-18 Thread Hoogendoorn, Sander
Hello, 1) When testing a new Pc, I obtain two different results from the old and the new one M9357637 is not prime. Res64: BCB1164E6826255E. WW1: C4F561C3,5448242, M9357637 is not prime. Res64: BCB1164E6826255E. WW1: C4F261C3,5448242,0003 Are this results compatible ? The 64 bits

RE: Mersenne: graphical image of factoring work being done

2001-04-02 Thread Hoogendoorn, Sander
Henk Stokhorst wrote: I wrote a small program in Delphi that uses the 'nofactor' files produced by 'decomp' as input to create a graphical image of the work that has been performed on factoring. Thanks, this is something i've been looking for, much easier then importing the file into Excel

RE: Mersenne: LL question

2001-03-27 Thread Hoogendoorn, Sander
But what if the mod M comes out to 1 on one of the intermediate steps? Then 1^2 - 2 = -1 Then what? spike Then you will be stuck in a loop, same thing happens when the outcome is -2, -1, 0 and 2 _ Unsubscribe list

Mersenne: Hybernation

2001-02-21 Thread Hoogendoorn, Sander
I personally don't mind a P100 running full LL tests; they are a small, but usefull contribution to our effort. I still use an old p100 and p166 to do a full LL test in the 9M range, but i do check in regularly and make sure that i won't hold up a new milestone. But i got another question,

Mersenne: Unofficial milestone!

2000-12-03 Thread Hoogendoorn, Sander
Hi, Today we reached 100.000 cleared exponents since last synchronization on primenet. When will the next synchronization be? The list with cleard exponents is getting a bit to long to download that often. _ Unsubscribe

Mersenne: OT: Home Primes

2000-11-26 Thread Hoogendoorn, Sander
A bit Off Topic, but i finaly had time to put some data i have of Home Primes (I.E. repeated factorizations of concatenated prime factors) online. In case you're interested http://www.geocities.com/home_primes _ Unsubscribe

RE: Mersenne: bug in Wordpad?

2000-10-31 Thread Hoogendoorn, Sander
Whenever I have a large file (about 3.000 lines) with exponents to test (extracted from the nofactor.cmp file) and replace all the 'Test=' with 'Factor=' using wordpad (part of windows accesoires) one line gets to read 'Factorst='. You can extract with the -w option to get Factor=

RE: Mersenne: Re: Double check validity

2000-09-12 Thread Hoogendoorn, Sander
George Woltman wrote: If the first and second tests were done by the same user, then my program prompts me as to whether I really want to accept this result. I usually accept the double-check for the following reasons: 1) It is not uncommon for top producers to get assigned a

RE: Mersenne: Primenet status report

2000-08-24 Thread Hoogendoorn, Sander
I noticed a while ago that the Primenet server started reporting "v19/v20" in the "Ver" column. When this showed only one version, it was useful to help determine which machines needed to be upgraded. Now it makes it impossible to distinguish between v19 and v20, which I'd like to do to make

Mersenne: Re: GIMPS Banners(was:exaflops)

2000-08-08 Thread Hoogendoorn, Sander
Well, actually i use the banners from http://www.mersenne.org/ips/banners/ I hope these will also be updated, but it looks like i have to change the script when i have time. That's cool! Right after I send this E-mail I'm going to update my web site and remove the old banners directory. This

RE: Mersenne: Trouble with new DSL connection, Part 2

2000-06-20 Thread Hoogendoorn, Sander
All was well until Prime95 needed to contact the server. Then I got the message Dial-up connection not active. Will try contacting server again in 2 minutes. When I reported this to [EMAIL PROTECTED], several people responded with the suggestion that I deselect the 'Use a dial-up connection

RE: Mersenne: Facelift

2000-04-17 Thread Hoogendoorn, Sander
4) Is this too slow to download? Would you rather not have the mouse rollover feature (it adds to the .gif files downloaded). No, not for mee (64k isdn) 5) Would you rather I use frames so the menu does not scroll? yes, it would be better, also the menu should fit on one screen, so no

RE: Mersenne: Prime 95 Speeds

2000-04-08 Thread Hoogendoorn, Sander
I worked that excel sheet up using the information available at http://www.mersenne.org/bench.htm; Goerge, There still isn't a link to this page from youre pages. The current link still points to the old benchmark page _

Mersenne: V20.1.1 P-1 Factoring

2000-03-24 Thread Hoogendoorn, Sander
The folowing exponents where factored by P-1, but why are the bounds so different? The first had a chance of 1.77% and the other two about 3.7% to find a factor . UID: sanderh/PC, M5542549 completed P-1, B1=7, B2=7, WW1: 8F7EF481 UID: sanderh/PC, M5542723 completed P-1, B1=6,

RE: Mersenne: The return of poaching?

2000-02-04 Thread Hoogendoorn, Sander
Dave has at least 80 exponents reserved between 2.4M and 3.99M. Eighty. Almost all are less than suspected M37. It is a certainty that without poaching, we will have to wait until late 2000 or later to prove M37, because Dave is trying to do all the double-checking singlehandedly. Not

RE: Mersenne: cpu problem

2000-01-17 Thread Hoogendoorn, Sander
Maybe a bigger/better cooler helps -Original Message- From: Paul Cuni [mailto:[EMAIL PROTECTED]] Sent: zondag 16 januari 2000 21:53 To: [EMAIL PROTECTED] Subject: Mersenne: cpu problem As to those errors I reported earlier it appears my cpu couldn't handle its 450mhz rated speed. Or

Mersenne: Archives

2000-01-13 Thread Hoogendoorn, Sander
Hi, I've been reading through the archives the last days but the last one is from mid 1998. I found a online archive but dowbloading every single message takes to much time. Is there a place where i can download the more recent archives (in one or two zip files) or can some one send

RE: Mersenne: The sound of number searching

1999-07-22 Thread Hoogendoorn, Sander
Read the archives, this has been discussed 2 or 3 times before -Original Message- From: burlington john [mailto:[EMAIL PROTECTED]] Sent: Wednesday, July 21, 1999 19:47 To: [EMAIL PROTECTED] Subject: Mersenne: The sound of number searching Hello Mersenne, Sorry for bad english its

RE: Mersenne: M38

1999-07-01 Thread Hoogendoorn, Sander
Took me a bit longer but has M38 has 2098960 digits ;-) At 02:21 01.07.99 -0400, Lucas Wiman wrote: The page belongs to a previous record holder... Took me about 30 seconds to find it. It's nice to see a thirty-eighth line in /root/math/ref/mers... I didn't! Am I _that_ bad at searching the