def fact(A): #fact(int)
    c0 = A
    r = 2
    lis = []
    count = 1
    while A != 1:
        if A%r == 0:
            A = A//r
            lis.append(r)
            r = 2
        else:
            r += 1
        if r > int(pow(c0,0.5))+1:
            lis.append(A)
            break
    return(lis)

n,h = map(int,input().split())
a = list(map(int,input().split()))
lis = fact(h)
lis_bool = [0]*len(lis)

for x in a:
    q = x
    for j,y in enumerate(lis):
        
        if lis_bool[j] == 0:
            if q%y == 0:
                lis_bool[j] = 1
                q = q//y

if 0 in lis_bool:
    print("NO")
else:
    print("YES")