130447domain: NPropertiesPrimalityPrimeyesAppears in sequencesPrimes that remain prime through 5 iterations of function f(x) = 4x + 3.at n=11A023339Indices of primes in the Heptanacci numbers sequence A122189.at n=4A248700Balanced primes of order thirteen.at n=34A300364Prime numbersat n=12200