#include<stdio.h>
int gcd(int a, int b)
{
	int r = a % b;
	while (r > 0)
	{
		a = b;
		b = r;
		r = a % b;
	}
	return b;
}
int main()
{
	int n, h;
	scanf("%d %d", &n, &h);
	int i;
	int a[200005];
	for (i = 0; i < n; i++)
		scanf("%d", &a[i]);
	for (i = 0; i < n; i++)
	{
		if (a[i] == 0)
			h = 1;
		else
			h /= gcd(a[i], h);
	}
	if (h == 1)
		printf("YES\n");
	else
		printf("NO\n");
	return 0;
}