Hello all, I have browsed some logs I archived long time ago and I have found this:
In may 1998, one user, "tomfakes", cleared around 80 exponents with factor found = "1" It was in the range 7013000-7055000. Regards, Jean-Yves > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED]]On Behalf Of George > Woltman > Sent: lundi 1 octobre 2001 21:01 > To: Daniel Swanson; Mersenne Digest > Subject: Re: Mersenne: Re: Factoring Failure? > > > Hi, > > At 04:07 PM 9/30/2001 -0700, Daniel Swanson wrote: > >I went through the Cleared Exponents > >report looking for other examples of factors found during > double-checks that > >should have been found during the initial factorization. > > 5977297 53 DF 6726544627832489 > > 6019603 57 DF 137024179940485697 > > 7019297 57 DF 160100125459121849 > > 7020641 58 DF 226230108157229263 > > 7025987 56 DF 74052063365823791 > > 7027303 55 DF 31090234297428433 > >10159613 56 DF 68279769831982367 > >Were numbers in this range all originally factored by the same user or > >computer? > > My logfiles from that long ago have been zipped and stored on CDROM. > It is possible that 7,010,000 - 7,030,000 were all factored by one person. > It was not uncommon for me to hand out large blocks for factoring to > users without Internet connections. While I no longer do this, there are > a handful of users pre-factoring the 20,000,000 - 80,000,000 area. I hope > their machines are reliable!! They probably are as they are finding the > expected number of factors. > > Anyway, it doesn't appear to be a program bug as you were able to find > the factor with trial factoring. I'm guessing either bad > hardware or an older > prime95 version had a bug. Either way, GIMPS has never considered > missing a factor as a big deal. It only means some wasted effort running > a LL test that could have been avoided. > > Thanks for the interesting findings! > > Regards, > George > > _________________________________________________________________________ > 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
