863497domain: NPropertiesPrimalityPrimeyesAppears in sequencesPrimes of the form (p^2+p+1)/3 where p is prime.at n=29A338299Primes p of the form (q^2+q+1)/3 where q is prime and (p^2+p+1)/3 is prime.at n=5A338300Prime numbersat n=68601