294167domain: NPropertiesPrimalityPrimeyesAppears in sequencesPrimes that remain prime through 4 iterations of function f(x) = 5x + 4.at n=30A023314Primes that remain prime through 5 iterations of function f(x) = 5x + 4.at n=2A023342Primes of the form 7n^2 - 8.at n=23A201853Prime numbersat n=25545