240727domain: NPropertiesPrimalityPrimeyesAppears in sequencesPrimes p such that nextprime(p + 1)^(p - 1) == 1 (mod p^2).at n=3A259502Primes p such that (p+6)^(p-1) == 1 (mod p^2).at n=4A355961Prime numbersat n=21279