#include <iomanip>
#include <iostream>
using namespace std;
int main()
{
    int n, a = 0, b = 0;
    cin >> n;
    for (int i = 2; i <= n; i++)
    {
        bool prime = true;

        for (int j = 2; j < i; j++)
        {
            if (i % j == 0)
                prime = false;
        }
        if (prime)
        {
            a = a + i;
            if (a > n)cout << b << endl;
            if (a > n)return 0;
            b++;
            cout << i << endl;
        }
    }
    return 0;
}