bufio_scanner = []


def main():
    n, h = [int(fmt_scan()) for _ in range(2)]
    a = [int(x) for x in input().split()]

    for _, v in enumerate(a):
        if v % gcd(h, v) == 0:
            h //= gcd(h, v)

    print("YES" if h == 1 else "NO")


def fmt_scan() -> str:
    sc = bufio_scanner
    if len(sc) == 0:
        for v in reversed(input().split()):
            sc.append(v)
    return sc.pop()


def gcd(a, b) -> int:
    a, b = max(a, b), min(a, b)
    while b > 0:
        a, b = b, a % b
    return a


main()