9260131domain: NPropertiesPrimalityPrimeyesAppears in sequencesNumbers k such that k-2, k^2-2, k^3-2, k^4-2 and k^5-2 are all prime.at n=26A216945Primes p for which p^n - 2 is prime for n = 1, 3, 5 and 7.at n=4A242518Primes p such that p - 2, p^2 - 2, p^3 - 2, p^4 - 2 and p^5 - 2 are all prime.at n=2A258572Prime numbersat n=618701