270073domain: NPropertiesPrimalityPrimeyesAppears in sequencesPrimes p such that p, p+24, p+48 are consecutive primes.at n=21A052190Engel expansion of hz = limit_{k -> infinity} 1 + k - Sum_{j = -k..k} exp(-2^j).at n=23A159835Primes p such that 2*p + 79 is a square.at n=27A269790Prime numbersat n=23649