39431921domain: NPropertiesPrimalityPrimeyesAppears in sequencesInitial members of prime septuplets (p, p+2, p+6, p+8, p+12, p+18, p+20).at n=8A022009Primes p in prime septuplets (p, p+2, p+6, p+8, p+12, p+18, p+20) at the end of the maximal gaps in A201051.at n=3A233425Initial members of prime septuplets.at n=20A257124Prime numbersat n=2401214