137943347domain: NPropertiesPrimalityPrimeyesAppears in sequencesInitial members of prime octuplets (p, p+2, p+6, p+12, p+14, p+20, p+24, p+26).at n=10A022012Least member p1 of prime octuplets (p1, p2, p3, ..., p8 = p1 + 26), the eight p's being consecutive primes.at n=21A065706Prime numbersat n=7802537