# -*- coding: utf-8 -*-


N, H = map(int,input().split())
A = list(map(int, input().split()))

def fact(n):
    arr = []
    temp = n
    for i in range(2, int(-(-n**0.5//1))+1):
        if temp%i==0:
            cnt=0
            while temp%i==0:
                cnt+=1
                temp //= i
            arr.append([i, cnt])
 
    if temp!=1:
        arr.append([temp, 1])
 
    if arr==[]:
        arr.append([n, 1])
 
    return arr

divlis = fact(H)

div, check = list(map(list,zip(*divlis)))

for a in A:
    for idx, i in enumerate(div):
        if a%i==0:
            check[idx] -= 1

for c in check:
    if c>0:
        print("NO")
        quit()
print("YES")