879667domain: NPropertiesPrimalityPrimeyesAppears in sequencesPrimes p == 1 (mod 3) such that ((p-1)/3)! == 1 (mod p).at n=17A152217Primes p such that p - d and p + d are also primes, where d is the smallest nonzero digit of p.at n=21A245878Prime numbersat n=69798