119923domain: NPropertiesPrimalityPrimeyesAppears in sequencesa(n) = 4^n mod 3^n.at n=11A064629Primes of the form 4^k mod 3^k.at n=2A178998Numbers n such that there is no other number k for which A155043(k) = A155043(n).at n=7A262509Prime numbersat n=11294