16776961domain: NPropertiesPrimalityPrimeyesAppears in sequencesa(n) = 8^n - 2^n + 1^n.at n=8A155599Primes of the form 2^k*(2^{phi(m)} - 1) + 1, where k and m are positive integers, and phi(.) is Euler's totient function.at n=41A234388Prime numbersat n=1077856