package Lecture5;

import java.math.*;
import java.util.*;

public class BigIntTest {
    public static void main(String[] args) {
        
        BigInteger a= new BigInteger("1000000000000");  // Constructor
        System.out.println("a: " + a);
        
        Random r= new Random();
        BigInteger b= new BigInteger(32, r);        // Entero largo aleatorio
        System.out.println("b: " + b);
        
        BigInteger c;
        c= b.add(a);                                // c= b + a
        System.out.println("c= a + b : " + c);
        
        BigInteger g= a;
        System.out.println("g= a : " + g);
                
        BigInteger d= new BigInteger(32, 10, r);    // Entero largo primo
        System.out.println("d (prime): " + d);

        BigInteger e;
        e= c.divide(d);                             // e= c / d
        System.out.println("e= c / d : " + e);
        
        if (d.isProbablePrime(10))
            System.out.println("Probablemente d es primo");
        else
            System.out.println("Probablemente d no es primo");
        if (c.isProbablePrime(10))
            System.out.println("Probablemente c es primo");
        else
            System.out.println("Probablemente c no es primo");
        
        BigInteger f= d.multiply(e);
        System.out.println("f= d * e : " + f);
        
        System.exit(0);
    }
}