On Tuesday 10 April 2001 14:20, you wrote:
> > Hi and thank you mr Leyland for the reply
> I have another question. If you are doing ECM factoring on a Fermat number
> with prime95 should you check the "Factor 2^N+1" box, since "Every factor
> of a Fermat number fermat(n) has the form 2^(n+2) * k + 1, k >= 2"?
Yes you should - and the exponent you should use is the large one (in the
thousands and up) listed on the page, not the Fermat exponent like 12, 14 or
20.
Nathan
_________________________________________________________________________
Unsubscribe & list info -- http://www.scruz.net/~luke/signup.htm
Mersenne Prime FAQ -- http://www.tasam.com/~lrwiman/FAQ-mers
