148861domain: NPropertiesPrimalityPrimeyesAppears in sequencesNumbers k such that (72*10^(k-1) - 27)/9 is a plateau prime.at n=12A082716Primes p such that (12*p - 1, 12*p + 1) and (18*p - 1, 18*p + 1) are twin primes.at n=17A138660Prime terms of A338820.at n=22A338102Prime numbersat n=13744