406586897domain: NPropertiesPrimalityPrimeyesAppears in sequencesPrimes of the form k^4 + 1.at n=22A037896Primes p such that all prime factors of p-1 have exponent 4.at n=9A188717Integers with only one prime factor and whose Euler's totient is a perfect biquadrate.at n=29A307690Prime numbersat n=21668689