import sys
import math

sys.setrecursionlimit(10 ** 8)
ini = lambda: int(sys.stdin.readline())
inl = lambda: [int(x) for x in sys.stdin.readline().split()]
ins = lambda: sys.stdin.readline().rstrip()
debug = lambda *a, **kw: print("\033[33m", *a, "\033[0m", **dict(file=sys.stderr, **kw))


def solve():
    n, h = inl()
    A = inl()
    for x in A:
        h //= math.gcd(x, h)
    return h == 1


print("YES" if solve() else "NO")