408379domain: NPropertiesPrimalityPrimeyesAppears in sequencesDistinct primes in sorted order from generation 2 onwards.at n=21A048465Primes p with pi(p), pi(2*p), pi(3*p) and pi(4*p) all prime, where pi(x) denotes the number of primes not exceeding x.at n=3A240604Prime numbersat n=34483