170707domain: NPropertiesPrimalityPrimeyesAppears in sequencesa(n) = 12^n - n^7.at n=5A024147Primes whose consecutive digits differ by 6 or 7.at n=29A048418Prime-indexed primes q such that prime(q)-q-1 is a prime indexed prime.at n=32A318751Prime numbersat n=15559