520547domain: NPropertiesPrimalityPrimeyesAppears in sequencesPrimes p such that 2^j+p^j are primes for j=0,1,2,4.at n=31A094487Positive integers m such that 2*m^2 - 1 = x^4 + y^4 for some nonnegative integers x and y with |x - y| > 1.at n=17A343913Prime numbersat n=43100