-- | Generates the sequence of prime numbers.
-- Based on <http://qiita.com/little_Haskeller/items/614a3ae20a517c19bb1f this article> .
primes2 :: Integral a => [a]
primes2 = map fromIntegral primes2'
    where
        primes2' = [2, 3, 5] ++ sieve2 5 7 (drop 2 primes2')
        sieve2 m s (p : ps) = [n | n <- ns, gcd m n == 1] ++ sieve2 (m * p) (p * p) ps
            where ns = [x + y | x <- [s, s + 6 .. p * p - 2], y <- [0, 4]]

-- | Factorizes the given integer using 'primes2'.
-- Based on <https://wiki.haskell.org/Testing_primality this page>.
factorize2 :: Integral a => a -> [a]
factorize2 1 = []
factorize2 n = factorize2' n primes2
    where
        factorize2' n ps@(p : pr)
            | p * p > n = [n]
            | r == 0    = p : factorize2' q ps
            | otherwise = factorize2' n pr
            where (q, r) = quotRem n p

main :: IO ()
main = putStrLn . (\n -> if 3 <= (length $ factorize2 n) then "YES" else "NO") =<< readLn