def gcd(x, y):
    if y == 0:
        return x
    else:
        return gcd(y,x%y)

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

for Ai in A:
    H /= gcd(Ai,H)
    if H ==1:
        ans = 'YES'
        break
else:
    ans = 'NO'
print(ans)