Re: Mersenne: ROUND OFF error

1999-07-21 Thread George Woltman
Hi all, At 08:13 PM 7/20/99 -0700, Daniel Swanson wrote: Iteration: 6128000/7812379, ERROR: ROUND OFF (0.4026489258) 0.40 [Tue Jul 20 16:35:33 1999] Disregard last error. Result is reproducible and thus not a hardware problem. I consulted the readme file, but it wasn't very helpful. What is a

Re: Mersenne: Mp and E-Cash

1999-07-21 Thread Brian J. Beesley
On 20 Jul 99, at 0:26, Luke Welsh wrote: That would be me. But I don't like the money because I think it opens a can of worms. ('can of worms' -- what do you say in Russian or Japanese or Flemish?) I happen to like money (you can buy beer with it and cover green fees). Primenet is a

Re: Mersenne: Worth it?

1999-07-21 Thread Brian J. Beesley
On 19 Jul 99, at 22:21, David M Einstein wrote: You will want to do P-1 in addition to, and after seiving. It would be foolish to use p-1 to discover a 30 bit factor. Not half - trial factoring with numbers that small, and _very_ heavily constrained, is _extremely_ fast. I tested

RE: Mersenne: The $100,000 award for 10,000,000 digit prime

1999-07-21 Thread Brian J. Beesley
On 19 Jul 99, at 18:40, Todd Sauke wrote: Alex, The group you seek always has 2^n elements. All bit combinations are possible. (P = 2^p-1 is "minus one" in n-bit words. 2*P is minus two, etc. up to 2^n*P which is 0. All bit patterns occur.) Todd Sauke In general, what you say is

Mersenne: Search Status report

1999-07-21 Thread Greg Hewgill
I noticed something slightly different on the search status page at http://www.mersenne.org/status.htm today (but it's probably been this way for a while). The "Expected new primes" column got some new nonzero numbers in rows where there are no exponents of unknown status. I presume this is

Re: Mersenne: Worth it?

1999-07-21 Thread Peter-Lawrence . Montgomery
FAQ author Lucas Wiman [EMAIL PROTECTED] writes Well, this might not be a problem. If P-1 tries more than one base, all that is required (per Mn) is *one* gcd. We just multiply the remainders from the bases mod Mn, and then take the gcd on the final remainders. We could have the

Mersenne: The sound of number searching

1999-07-21 Thread burlington john
Hello Mersenne, Sorry for bad english its not my native language, thanks. I run mprime (or prime95 ntprime) on my laptop. When I start the programm on my notebook it makes a strange mechanical pulsing sound like an old damaged wheel or like an ill cricket. The sound doesn't come out