149153domain: NPropertiesPrimalityPrimeyesAppears in sequencesPrimes that are concatenations of k with k + 4.at n=16A032627Primes whose digits can be rearranged to give the initial terms of the decimal expansion of Pi.at n=30A052493Primes of the form (n^2+2)/6 where n^2+1 is prime.at n=19A215429Prime numbersat n=13774