1596509domain: NPropertiesPrimalityPrimeyesAppears in sequencesPrimes of the form 3^k + 3^m - 1, where k and m are positive integers.at n=34A234346Primes of the form m = 3^i + 3^j - 1, where i > j >= 0.at n=29A239713Prime numbersat n=120897