A219461 Primes p such that 2^p - 1 is a prime with primitive root 3.
3, 5, 7, 17, 19, 89, 107, 521, 2203, 2281, 4253
Offset: 1
Links
- Discussion titled Conjecture about multiplicative order of 3 modulo a Mersenne prime, (postings in mersenneforum.org), starting May 14 2006.
- Index entries for primes by primitive root
Programs
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Mathematica
Select[Prime@Range[98], PrimitiveRoot[2^# - 1] == 3 &]
Extensions
a(9)-a(11) from Max Alekseyev, Feb 07 2024
Comments