40253domain: NPropertiesPrimalityPrimeyesAppears in sequencesPrimes that remain prime through 3 iterations of function f(x) = 2x + 7.at n=25A023275Primes that remain prime through 4 iterations of function f(x) = 2x + 7.at n=8A023305a(n) = 29 + 73*n + 37*n^2.at n=32A145980Primes in A239237.at n=31A361252Prime numbersat n=4228