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Forum: Wagstaff PRP Search 2019-11-23, 22:46
Replies: 6
Views: 4,877
Posted By a1call
The Mersenne composite must have a prime...

The Mersenne composite must have a prime exponent.
Is 170 a prime number?
Forum: Wagstaff PRP Search 2019-11-23, 22:25
Replies: 6
Views: 4,877
Posted By a1call
The Mersenne part has been known since 1775 as...

The Mersenne part has been known since 1775 as proven in this link first shown to me by sm:
https://primes.utm.edu/notes/proofs/MerDiv2.html
It is of practical use in proving factors of Mersenne...
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