260017domain: NPropertiesPrimalityPrimeyesAppears in sequencesPrime numbers after which at least four distinct classes modulo 7 are equally represented among the primes to that point.at n=27A217147Primes of the form 4^x + y^4 with x, y > 0.at n=26A250717Semi-octavan primes: primes of the form x^4 + y^8.at n=20A291206Prime numbersat n=22841