#include <bits/stdc++.h>
using namespace std;
bool hs(int n)
{
    bool r = false;
    for(int i =2 ;i<=sqrt(n);i++)
    {
        if (n%i==0)
        {
            r = true;
        }
    }
    if(n<=1) r = false;
    return r;
}
int main()
{
    for (int i =100;i<=999;i++)
    {
        int k1 = i/10;
        int k2 = i/100;
        if (hs(i)==true && hs(k1)==true && hs(k2)==true)
        {
            cout << i<<endl;
        }
    }

    return 0;
}
/**************************************************************
	Problem: 1143
	User: mariooo
	Language: C++
	Result: Accepted
	Time:15 ms
	Memory:2072 kb
****************************************************************/