63977domain: NPropertiesPrimalityPrimeyesAppears in sequencesPrimes p whose period of reciprocal equals (p-1)/11.at n=20A056216Primes such that prime plus its digit sum is a perfect square.at n=26A230087Primes p such that if q and r are the next two primes, (p - 1)^2 + 1, (q - 1)^2 + 1 and (r - 1)^2 + 1 are all prime.at n=8A376605Prime numbersat n=6412