135979domain: NPropertiesPrimalityPrimeyesAppears in sequencesPrimes of the form p + (p^2 - 1)/8, where p is also prime.at n=35A165352Primes of the form T(p) - 2 where T(p) is the triangular number (A000217) with prime index p in A357218.at n=27A357219Prime numbersat n=12665