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

public class FindPrime
{

    public static void main(String args[])
    {
        if (args.length != 1) {
            System.out.println("Usage: java FindPrime <msg>");
            System.exit(1);
        }


        String msg = args[0];
        byte[] m   = msg.getBytes();

        BigInteger big = FindPrime.findPrime(m);

        System.out.println(big.toString());

    }

    public static BigInteger findPrime(byte[] m)
    {
        // your code here
    }

    public static boolean isPrime(BigInteger b)
    {
        // your code here
    }

}