189004141domain: NPropertiesPrimalityPrimeyesAppears in sequencesPrimes of the form k^4 + k^3 + k^2 + k + 1.at n=28A088548Primes of the form n^4 + n^3 + n^2 + n + 1 where n is nonprime.at n=18A193366Prime numbersat n=10503158