209441domain: NPropertiesPrimalityPrimeyesAppears in sequencesPrimes of the form k!!! + 1.at n=9A037082Primes of the form x^2 + 5*y^2, where x and y=x+1 are consecutive natural numbers.at n=40A176608Triple factorial primes: primes which are within 1 of a triple factorial number.at n=11A274386Prime numbersat n=18757