divisors = []
def make_divisors(n):
    
    for i in range(1, int(n**0.5)+1):
        if n % i == 0:
            divisors.append(i)
            if i != n // i:
                divisors.append(n//i)

    return 0

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

for li in l_A:
    make_divisors(li)

divisors = set(divisors)
ans = []
for i in range(1, int(H**0.5)+1):
    if H % i == 0:
        ans.append(i)
        if i != H // i:
            ans.append(H//i)
if len(divisors) == len(set(list(divisors) + ans)):
    print("YES")
else:
    print("NO")