166487domain: NPropertiesPrimalityPrimeyesAppears in sequencesprime(k) for those k where floor((2*(prime(k+1)-prime(k))*PrimePi(k) mod (8*k))/k) = m with m = 12.at n=15A109566Primes p such that q-p = 54, where q is the next prime after p.at n=16A204666Prime numbersat n=15211