1685775domain: NAppears 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=4A216945Records in A245511: smallest m > 1 such that the largest odd number less than m^k is prime for every 0 < k < n, but not for k = n.at n=6A245512