from collections import defaultdict

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

def prime_list(x):
	i=2
	prime=defaultdict(int)
	while i*i<=x:
		while x%i==0:
			x//=i
			prime[i]+=1
		i+=1
	if x>1:
		prime[x]+=1
	return prime

p=prime_list(h)

for x in a:
	for y in p.keys():
		while p[y]>0 and x%y==0:
			p[y]-=1

if sum(p.values())==0:
	print("YES")
else:
	print("NO")