n,h = map(int, input().split())
A = list(map(int, input().split()))

import math
def factorize(n):
    d = {}
    temp = int(math.sqrt(n))+1
    for i in range(2, temp):
        while n%i== 0:
            n //= i
            if i in d:
                d[i] += 1
            else:
                d[i] = 1
    if d == {}:
        d[n] = 1
    else:
        if n in d:
            d[n] += 1
        elif n != 1:
            d[n] =1
    return d

d = factorize(h)
from collections import defaultdict
c = defaultdict(lambda:0)
for a in A:
    a = abs(a)
    for k in d.keys():
        cnt = 0
        while a%k == 0:
            a //= k
            cnt += 1
        c[k] += cnt
#print(c)
#print(d)
for k, v in d.items():
    if v > c[k]:
        print('NO')
        exit()
else:
    print('YES')