9559817domain: NPropertiesPrimalityPrimeyesAppears in sequencesPrimes p such that p = 2 (mod pi(p)), where pi(p) = A000720(p) is the prime counting function.at n=6A156152Primes p such that p == 2 (mod pi(p)) and pi(p) is prime.at n=3A156153Prime numbersat n=637321