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