86131domain: NPropertiesPrimalityPrimeyesAppears in sequencesPrimes p such that 42*p-1, 42*p+1 and 48*p-1, 48*p+1 are twin primes.at n=19A138697Primes of the form p==3 (mod 4) such that the average of their primitive roots equals p/2.at n=17A267010Prime numbersat n=8373