427717domain: NPropertiesPrimalityPrimeyesAppears in sequencesPrimes p such that all prime factors of p-1 have exponent 2.at n=28A089195Primes of the form 9*n^2 + 1.at n=28A156226Primes of the form p^2 + 2*p + 2 where p is prime.at n=28A157467Primes of the form 1+A162143(k).at n=10A164517Prime numbersat n=35978