import collections

def ps(n):
    ret=collections.defaultdict(int)
    for i in range(2,int(n**0.5)+1):
        while n%i==0:
            ret[i]+=1
            n//=i
    if n!=1:
        ret[n]+=1
    return ret

n,h=map(int,input().split())
arr=list(map(int,input().split()))
primes=ps(h)
for val in arr:
    for p in primes.keys():
        if primes[p]==0:
            continue
        while val%p==0:
            primes[p]-=1
            val//=p
            if primes[p]==0:
                break
for p in primes.keys():
    if primes[p]!=0:
        print('NO')
        break
else:
    print('YES')