3456721domain: NPropertiesPrimalityPrimeyesAppears in sequencesPrimes p such that p+1, p+2, p+3, p+4, p+5 are resp. 2-, 3-, 4-, 5-, 6-almost primes.at n=4A113150Seven-digit primes with derangement of digits 1..7.at n=22A187016Prime numbersat n=247347