mod = 1000000007
eps = 10**-9


def main():
    import sys
    from math import gcd
    input = sys.stdin.readline

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

    for a in A:
        H //= gcd(H, a)
    if H == 1:
        print("YES")
    else:
        print("NO")


if __name__ == '__main__':
    main()