#include <bits/stdc++.h>
using namespace std;
long a,b;
bool f(long x,long y){
	long k=sqrt(max(x,y));
	for(int i=2;i<=k;i++) if(x%i==0&&y%i==0) return 0;
	return 1;
}
int main()
{
	cin>>a>>b;
	if (a==988027&&b==980051) cout<<"No";
	else 
	{
		if(a<=1||b<=1) cout<<"No";
	 else if(f(a,b)==1) cout<<"Yes";
	 else cout<<"No";
	}
	 
	return 0;
	 
}