848087domain: NPropertiesPrimalityPrimeyesAppears in sequencesPrimes of the form k^2 + k + 844427.at n=32A160548a(n) = 10*a(n-1) - 23*a(n-2) for n > 1; a(0) = 1, a(1) = 9.at n=7A163349Prime numbersat n=67477