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Old 2005-03-10, 14:15   #8
Uncwilly
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If you are doing the P-1 factoring, you are not proving the number to be prime, you are rather looking for a factor to disprove its primeness. Because, you can't find a prime with P-1, you don't get credit as having found it, therefore you don't share as a discoverer.
If you are doing the L-L primality checking, you do get credit.

To answer blackguard's question about double checking: To ensure that a newly discovered prime is real, Geogre has some volunteers that have access to non-x86 computers that are fast to do double checking.
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