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Such primes are called Wagstaff primesWagstaff primes. Their (in)finiteness is an open question (similarly to Mersenne ptimesprimes).
See this OEIS entry for further references: http://oeis.org/A000978
Such primes are called Wagstaff primes. Their (in)finiteness is an open question (similarly to Mersenne ptimes).
Such primes are called Wagstaff primes. Their (in)finiteness is an open question (similarly to Mersenne primes).
