Re: Mersenne: Factor of 2^(2^31-1)-1 found ($)
All (and especially Chris), Yesterday (and the day before), I went to the Illinois number theory conference. There (2nd talk of yesterday) J. P. Selfridge announced that he would give away $1000 US for any factor found of a number which ought to be prime (he provided a list). On that list was 2^(2^31-1)-1. Please post the list of candidates, to the mailing list. Ken F_m for m=14,20,22,24,31 M(M(p)) for p=31,61,127 M(B(p)) for p=31,61,127 F_m for m=2^k+k k=6 B(p)=(2^p+1)/3 -Lucas _ Unsubscribe list info -- http://www.scruz.net/~luke/signup.htm Mersenne Prime FAQ -- http://www.tasam.com/~lrwiman/FAQ-mers
Mersenne: Factor of 2^(2^31-1)-1 found ($)
All (and especially Chris), Yesterday (and the day before), I went to the Illinois number theory conference. There (2nd talk of yesterday) J. P. Selfridge announced that he would give away $1000 US for any factor found of a number which ought to be prime (he provided a list). On that list was 2^(2^31-1)-1. I began searching for a factor of this number in mersfacgmp at around 12:10 Central standard time. I thought that mersfacgmp was malfunctioning, because it terminated too quickly, but I was wrong, it had found a factor! 295257526626031 divides 2^(2^31-1)-1, I have confirmed it in 3 different programs. Just to make sure that I haven't gone off the deep end, could Chris Caldwell confirm that he actually offered a prize for this number, and could the rest of you confirm that it is an actual factor? Also, Chris, I lost the sheet that had everyone's email address' at the conference, could you send me J.P. Selfridge's email address? Thank you, Lucas To guard against errors in transmitions the factor is 295257526626031 _ Unsubscribe list info -- http://www.scruz.net/~luke/signup.htm Mersenne Prime FAQ -- http://www.tasam.com/~lrwiman/FAQ-mers
Re: Mersenne: Factor of 2^(2^31-1)-1 found ($)
On Sun, 19 Sep 1999, Lucas Wiman wrote: All (and especially Chris), Yesterday (and the day before), I went to the Illinois number theory conference. There (2nd talk of yesterday) J. P. Selfridge announced that he would give away $1000 US for any factor found of a number which ought to be prime (he provided a list). On that list was 2^(2^31-1)-1. I will check with him on what he meant--I notice at least one other number on his list is already factored. I will post the revised list here as soon as I get it. Chris _ Unsubscribe list info -- http://www.scruz.net/~luke/signup.htm Mersenne Prime FAQ -- http://www.tasam.com/~lrwiman/FAQ-mers
