#include<bits/stdc++.h>
using namespace std;
int ss(int n){
	if(n<2){
		return 0;
	}else{
		for(int i=2;i<=sqrt(n);i++){
			if(n%i==0){
				return 0;
			}
		}
		return 1;
	}
}
int main(){
	int n,i,s=0;
	for(i=100;i<1000;i++){
		if(ss(i)==0&&ss(i/10)==0&&ss(i/100)==0){
			cout<<i<<endl;
			s++;
		}
	}
	cout<<s;
	return 0;
}

/**************************************************************
	Problem: 1143
	User: zzz
	Language: C++
	Result: Wrong Answer
****************************************************************/