243391domain: NPropertiesPrimalityPrimeyesAppears in sequencesSum of the entries of the table of marks of the alternating group.at n=8A218918Primes p such that p^2 - p - 1, p^3 - p - 1 and p^4 - p - 1 are all prime.at n=16A236173Numbers k such that 347*2^k+1 is prime.at n=31A322971Prime numbersat n=21495