/* package whatever; // don't place package name! */

import java.util.*;
import java.lang.*;
import java.io.*;

/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
	public static void main(String[] args){
        System.out.println(primzahl(12));
    }

    public static boolean primzahl(int i){

        for(int j = 2; j < i; j++){
           
            int divi = (i%j);
            if( divi == 0){
                return false;
            }  
        }
        return true;  
    }
}