#include<bits/stdc++.h>
using namespace std;
bool ss(int q){
	bool r=true;
	if(q<2){
		r=false;
	} 
	else{
		for(int i=2;i<=sqrt(q);i++){
			if(q%i==0){
				r=false;
				break;
			}	
		}
		
	}
return r;
}
int main()
{
	int i;
	for(i=1000;i<3000;i++){
		if(ss(i) &&ss(i%1000) &&ss(i%100) &&ss(i%10) )
			cout<<i<<endl;
	}
	return 0;
}
/**************************************************************
	Problem: 1137
	User: houshanglin
	Language: C++
	Result: Accepted
	Time:5 ms
	Memory:2072 kb
****************************************************************/