Brian For M1123 the factor 777288435261989969 using sigma = 1459848859275459 has a group order of 777288435636813540 = 2^2*3*5*11*31*1823*38917*535489 thus:
1. In stage 1: B1 >= 535489 is required 2. Noting that 534241 is 44147th prime and 535489 the 44230th prime; In stage 2: B1 >= 38917 is required and during stage 2 the block of primes for B2 >= 534241 happens to include the largest factor 535489. Regards Alan Powell At 02:17 PM 11/10/02, you wrote: >Here's one example: > >With sigma=1459848859275459, Prime95 v22.12 finds the factor >777288435261989969 of M1123: > >in stage 1 with B1 >= 535489 >in stage 2 with B1 >= 38917 & B2 >= 534241 > >I'm not entirely sure why the B2 required to find the factor at the end of >stage 2 is smaller than the B1 required to find it in stage 1. One of the >improvements I guess. _________________________________________________________________________ Unsubscribe & list info -- http://www.ndatech.com/mersenne/signup.htm Mersenne Prime FAQ -- http://www.tasam.com/~lrwiman/FAQ-mers
