45002591domain: NPropertiesPrimalityPrimeyesAppears in sequencesInitial members of prime septuplets (p, p+2, p+6, p+8, p+12, p+18, p+20).at n=9A022009Initial primes in prime septuplets (p, p+2, p+6, p+8, p+12, p+18, p+20) preceding the maximal gaps in A201051.at n=4A201249Initial members of prime septuplets.at n=23A257124Prime numbersat n=2718332