105361domain: NPropertiesPrimalityPrimeyesAppears in sequencesPrimes that remain prime through 4 iterations of function f(x) = 2x + 9.at n=33A023306Primes p such that p, p+6, p+12, p+18 are consecutive primes and p = 6*k+1 for some k.at n=18A090837Prime numbersat n=10052