136993domain: NPropertiesPrimalityPrimeyesAppears in sequencesNumbers k such that 245*2^k+1 is prime.at n=30A032499Terms in A006512 containing the digit "6" at least once, such that changing every "6" to a "9" and vice versa yields a larger term in A006512.at n=23A123211Prime numbersat n=12760