from collections import Counter
from functools import reduce
from operator import add
import math


def make_primes(size: int) -> list:
    if not isinstance(size, int):
        raise AttributeError("args must be int but given %s" % size.__class__)
    if size < 0:
        raise ValueError("args must be (size < 0) but given %s" % size)
    if size < 2:
        return []

    res = []
    flag = [True for _ in range(size + 1)]
    limit = int(math.sqrt(size))

    for i in range(2, limit + 1):
        if flag[i]:
            res.append(i)
            for j in range(i, size + 1, i):
                flag[j] = False

    for i in range(max(2, limit), size + 1):
        if flag[i]:
            res.append(i)

    return res


def prime_factor(n: int, primes: list) -> Counter:
    if not isinstance(n, int) or not isinstance(primes, list):
        raise AttributeError("args must be int but given (%s, %s)" % (n.__class__, primes.__class__))
    if n < 1:
        raise ValueError("args must be (n < 1) but given %s" % n)

    res = Counter({1: 1})
    while True:
        ok = False
        for i in range(len(primes)):
            if n % primes[i] == 0:
                if primes[i] in res:
                    res[primes[i]] += 1
                else:
                    res[primes[i]] = 1
                n = n // primes[i]
                break
            if primes[i] > n:
                ok = True
                break
        if ok:
            break
    return res


if __name__ == '__main__':
    N, H = map(int, input().split())
    A = list(map(int, input().split()))

    primes = make_primes(H+1)
    A_factor = reduce(add, (prime_factor(a, primes) for a in A))
    h_factor = prime_factor(H, primes)

    if A_factor & h_factor == h_factor:
        print("YES")
    else:
        print("NO")