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Old 2020-01-23, 00:39   #3
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storm5510's Avatar
Aug 2009

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Originally Posted by VBCurtis View Post
Sorry for overlooking your question for so long. We run LLR to test k*2^n-1 or k*2^n+1 formats (and quite a few others). If LLR doesn't handle it, PFGW does.

Also, 231*2^2335281-1 is prime! 702992 digits.
Actually, I had forgotten about this. I have been experimenting with PFGW. There is a lot to read. It is picky about its input formats.
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