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
