#include<iostream>
#include<cmath>

using namespace std;


bool HeShu(int n);

int main(){
	int a=0,b=0,c=0;
	
	for(int i=100;i<=999;i++){
		a=i/100;
		b=i/10%10;
		c=i%10;
		
		if(HeShu(i)&&HeShu(a*10+b)&&HeShu(a)){
			cout<<i<<endl;
		}
	}
	
}

bool HeShu(int n){
	bool f;
	

	f=false;
	
	for(int i=2;i<=sqrt(n);i++){
		if(n%i==0){
			f=true;
			break;
		}
	}
	
	
	if(f==true && n>3){
		return true;
	}
	else
	{
		return false;
	}
	
}


/**************************************************************
	Problem: 1143
	User: admin
	Language: C++
	Result: Accepted
	Time:14 ms
	Memory:2072 kb
****************************************************************/