34222501domain: NPropertiesPrimalityPrimeyesAppears in sequencesPrimes of form pq + 2 where p and q are twin primes.at n=17A051779Primes of the form n^2 + 1 such that (n - 1)^2 + 1 and (n + 1)^2 + 1 are semiprimes.at n=12A234693Prime numbersat n=2102099