770177domain: NPropertiesPrimalityPrimeyesAppears in sequencesa(n) = Sum_{k=1..n} k^3 * tau(k), where tau is A000005.at n=28A320895Lowest prime p in a ladder of 5 consecutive primes p, p+2, p+6, p+14, p+30.at n=21A372248Prime numbersat n=61748