478189domain: NPropertiesPrimalityPrimeyesAppears in sequencesNumber of polyhexes of class PF2 with a particular symmetry.at n=19A030525Primes p such that 1000p+1, 1000p+3, 1000p+7 and 1000p+9 are prime.at n=19A242562Prime numbersat n=39863