import sys
input=sys.stdin.readline
def I(): return int(input())
def MI(): return map(int, input().split())
def LI(): return list(map(int, input().split()))

def main():
    mod=10**9+7
    N,H=MI()
    A=LI()
    from math import gcd
    for i in range(N):
        g=gcd(A[i],H)
        H=H//g
        
    if H==1:
        print("YES")
    else:
        print("NO")


main()