[seqfan] Safe pseudoprimes to base 2
tomaszordowski at gmail.com
Thu Sep 27 08:21:45 CEST 2018
I have an interesting conjecture:
For primes p > 7; if (p-1)/2 is prime, then (2^(p-1)-1)/3 is pseudoprime.
It seems that this pseudoprime is always a super-Poulet number.
How far can you check my guesses?
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