Paul Leyland writes:
A nasty thought just struck me.
It struck me in a different context some time ago; it might even be
archived.
When applying P-1 to mersenne numbers, an additional 2*p ought to
be included in the product, over and above all the powers of prime
< B1. Can anyone who knows for certain reassure me that this has
been done for the prime95 V20 implementation?
I don't know about the prime95 V20 implementation per se, but George
was aware of this quite some time ago, because he once told me that it
is/was being done in Factor98, his older, stand-alone, P-1 factorer.
While I'm here, I still accept P-1 factoring reservations and Factor98
and Factor95 save files for small exponent Mersennes.
Will
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