from collections import Counter,defaultdict

def factorization(n):
    dic=defaultdict(int)
    tmp=n
    for i in range(2,int(n**0.5)+1):
        if(tmp%i==0):
            cnt=0
            while tmp%i==0:
                cnt+=1
                tmp//=i
            dic[i]+=cnt
    if(tmp!=1):
        dic[tmp]+=1
    return dic

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

arr=factorization(H)

for i in range(N):
    for x in arr.keys():
        while(arr[x]>0 and A[i]%x==0):
            A[i]//=x
            arr[x]-=1
isok=True
for y in arr.values():
    if y!=0:
        isok=False
        break
if isok:
    print('YES')
else:
    print('NO')