1616611domain: NPropertiesPrimalityPrimeyesAppears in sequencesPrimes that contain digits 1 and 6 only.at n=15A020454Primes p such that p + 6, p + 10, p + 12, p + 16 and p + 22 are also primes.at n=19A383396Primes p such that p + 6, p + 12, p + 16, p + 22 and p + 28 are also primes.at n=18A384528Prime numbersat n=122300