71378569domain: NPropertiesPrimalityPrimeyesAppears in sequencesa(n) = prime(2^n).at n=22A033844Numbers that begin a run of consecutive integers k such that PrimePi(k) divides 2^k.at n=21A073799a(n) = prime(4^prime(n)).at n=4A096325a(n) = prime(4^n).at n=11A119772Prime numbersat n=4194304