166627domain: NPropertiesPrimalityPrimeyesAppears in sequencesBeastly primes (version 2): primes containing 666 as a substring.at n=25A131645Primes p for which p + 4, p^2 + 4 and p^3 + 4 are primes.at n=24A243734Expansion of Product_{k>=1} (1 + x^k) * (1 + x^(2*k)) * (1 + x^(3*k)) * (1 + x^(4*k)) * (1 + x^(5*k)).at n=41A327047Prime numbersat n=15222