13703077domain: NPropertiesPrimalityPrimeyesAppears in sequencesPrimes p such that p^2 divides 23^(p-1) - 1.at n=2A128669Primes p that satisfy q^(p-1) == 1 (mod p^2), i.e., are base-q Wieferich primes, for a prime q dividing p+1.at n=5A355546Prime numbersat n=892017