#include<bits/stdc++.h>
using namespace std;
int pdhs(int a)
{
	bool x=false;
	for(int i=2;i<=sqrt(a);i++)
	{
		if(a%i==0)
		{
		    x=true;	
		}
	}
	if(a<=1)
	{
		x=false;
	}
	return x;
}
int main()
{
	for(int i=100;i<=999;i++)
	{
		int k1=i/10;
		int k2=i/100;
		if(pdhs(i)==true && pdhs(k1)==true && pdhs(k2)==true)
		{
			cout<<i<<endl;
		}
	}
	return 0;
}
/**************************************************************
	Problem: 1143
	User: chenkexin
	Language: C++
	Result: Accepted
	Time:15 ms
	Memory:2072 kb
****************************************************************/