#include<bits/stdc++.h>
using namespace std;
#define int long long
signed main(){
	int n;
	cin >> n;
	map<int,int> m;
	for(int i = 2;i * i <= n;i++){
		while(n % i == 0){
			m[i]++;
			n /= i;
		}
	}
	if(m.size() == 2) cout << "Yes";
	else cout << "No";
}