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Old 2020-09-09, 14:12   #45
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Dec 2003
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Quote:
Originally Posted by storm5510 View Post
Having a factor, I don't understand how this could be considered a "first-time" test. The more I think about all of this, the more my head hurts.
First-time test on cofactors after a new factors is found, compared to double checking the same results afterwards (which is not needed anymore if proof files are used).

But PRP-CF and PRP-CF-DC tests are not part of GIMPS main project of finding Mersenne Primes. It is a side project to test if the cofactors are PRP or if there are more factors to be found on those Mersenne numbers, like the side projects ECM on Fermat numbers or ECM on small Mersenne numbers.

Last fiddled with by ATH on 2020-09-09 at 14:13
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