2216803domain: NPropertiesPrimalityPrimeyesAppears in sequencesa(n) = [ a(n-1)/a(1) + a(n-3)/a(3) + a(n-5)/a(5) + ... ], for n >= 3.at n=37A022859Initial prime in set of 4 consecutive primes in arithmetic progression with common difference 18.at n=27A033448Prime numbersat n=163815