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Old 2020-06-28, 13:10   #3
Jun 2020

22 Posts

Originally Posted by Uncwilly View Post
For the older one you can do PRP-CF (PRP tests on the cofactors of Mersenne numbers.) They tend to be shorter assignments, just 2-3 GHz-days.

If you have a bunch of RAM that you can spare, look at P-1. Those can be shorter, you can find factors...
Thank you for the response! So the PRP-CF test would try to find co-factors of an exponent that’s already a known composite? Does that have a higher success rate than ECM?

For the P-1 test, how much RAM is needed? If I have 16 GB on my machine, is 8 GB enough? If the P-1 test only finds factors/cofactors, would it make sense to run PRP tests on the really big numbers on the newer laptop, while searching for cofactors on the old?
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