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)

dic2 = {}
for i in s:
    dic2[i] = 0
for a in A:
    now = a
    for c in s:
        while now%c == 0:
            now //= c
            dic2[c] += 1

for c in s:
    if dic[c] > dic2[c]:
        print("NO")
        exit()
print("YES")