mersenneforum.org - View Single Post - Sierpinski/Riesel Base 5: Post Primes Here

robert44444uk · 2004-10-07, 06:16

Actually have not started sieving yet! Just pre factoring ( -f100) in pfgw. Populations of candidates with no factors under 1000000 are only 1-3% or so in any case.

Don't know of a quick way to sieve 200 candidates, Phil Carmody developed software to sieve 12 at a time.

But it would be easy to take a few candidates and sieve in NewPGen and run up to 200000 or so.

Regards

Robert Smith

PS: 150506*5^22667+1 popped up overnight

2004-10-07, 06:16	#4
robert44444uk Jun 2003 Oxford, UK 784₁₆ Posts	Sieve Actually have not started sieving yet! Just pre factoring ( -f100) in pfgw. Populations of candidates with no factors under 1000000 are only 1-3% or so in any case. Don't know of a quick way to sieve 200 candidates, Phil Carmody developed software to sieve 12 at a time. But it would be easy to take a few candidates and sieve in NewPGen and run up to 200000 or so. Regards Robert Smith PS: 150506*5^22667+1 popped up overnight