7890479domain: NPropertiesPrimalityPrimeyesAppears in sequencesa(n) = smallest prime of the form (2n-1)^k - 2, or 0 if no such number exists.at n=26A084714Primes of the form k^4 - 2.at n=10A182347Primes that are of the form p^k-2 for some k > 3 and prime p.at n=14A347032Prime numbersat n=532908