24137567domain: NPropertiesPrimalityPrimeyesAppears in sequencesa(n) = smallest prime of the form (2n-1)^k - 2, or 0 if no such number exists.at n=8A084714Primes p such that sum of divisors of p+2 is prime.at n=23A171130Primes that are of the form p^k-2 for some k > 3 and prime p.at n=16A347032Prime numbersat n=1515195