521641domain: NPropertiesPrimalityPrimeyesAppears in sequencesReal part of (1 + n*i)^5.at n=18A121671Primes of the form (p^2 - 1)/16 - p, where p is also a prime.at n=28A165616Primes of the form T(n) + S(n) + C(n) + 1 where T(n), S(n) and C(n) are the n-th triangular, square and cube numbers.at n=16A228908Prime numbersat n=43187