Quote:
Originally posted by hc_grove
Well, it seems that I have some special gift for finding really large factors, I just got this one:
5767642985639413495402269732331|28433*2^9985657+1
It's only 31 digits and thus only comes third among my factors in size, but it still 5 digits more than MikeH's largest, which is now number four on the list of large factors (for n>10000 - if we only consider n>100000, MikeH is still in fourth place but a digit further behind).
And I still don't have Java on this machine, so I can't use the online ECM factoring thing for factoring p (to see if it's prime) or p-1 (to see how smooth it is).
Congrats again ... you do have a certain nack for these factors.