n,h = map(int,input().split())
A = list(map(int,input().split()))
dic = {}
s = set()
now = h
for i in range(2,int(h**0.5)+1):
    if now%i:
        continue
    dic[i] = 0
    s.add(i)
    while now % i == 0:
        now //= i
        dic[i] += 1

if now != 1:
    dic[now] = 1
    s.add(now)

for a in A:
    now = a
    rem = []
    for c in s:
        if now%c:
            continue
        while now%c == 0:
            now //= c
            dic[c] -= 1
        if dic[c] <= 0:
            rem.append(c)
    for c in rem:
        s.remove(c)
if len(s) != 0:
    print("NO")
else:
    print("YES")