12356401domain: NPropertiesPrimalityPrimeyesAppears in sequencesP_4(2n+1), the Legendre polynomial of order 4 at 2n+1.at n=20A144124Primes of the form P_4(n) where P_4(n) is the Legendre polynomial of order 4 at n.at n=6A144125Prime numbersat n=809890