377487361domain: NPropertiesPrimalityPrimeyesAppears in sequencesa(n) is the least prime p such that p-1 is divisible by 2^n and not by 2^(n+1).at n=23A057775Anti-elite primes (A128852) that are not prime factors of Fermat primes (A023394).at n=41A372891a(n) = 2*a(n-1) + 2^(n+1) - 1, a(0) = 0.at n=23A392083Prime numbersat n=20197904