14137199domain: NPropertiesPrimalityPrimeyesAppears in sequencesPrimes which produce records in A157188, at index i=pi(a(n)) (pi=A000720).at n=19A157190a(n) is the smallest prime such that exactly n prime pairs (p,q) exist with a(n) = p * q + p + q.at n=28A198277Prime numbersat n=918422