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Old 2006-09-12, 02:25   #4
rogue
 
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"Mark"
Apr 2003
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It depends upon which program(s) you are using. If you use FermFact, then you must run the output through PFGW or LLR. With LLR you can do the primality test, then run the primes through PFGW using the -gx and -a2 switches to look for Fermat and GFN factors. You can sent Fermat factors to the people at FermatSearch and the GFN factors to Wilfrid Keller.

If you are using Leonid Durman's fermat.exe program, it just tests for Fermat divisibility. The same could be said for gmp-fermat, the GMP based software that works similar to Leonid's program, but can be run on non-x86 CPUs.
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