我的运算时上百万的数字，所以用这个程序跑的很慢  能让我的程序优化下么  跑的更快些么！！！

package com.chensong;
import java.math.BigInteger;
import java.util.Scanner;


public class chensong {
    public static void main(String[] args) {
for(int i=1;i<100;i++){
        Scanner reader=new Scanner(System.in);
        System.out.print("p:");
        BigInteger p=new BigInteger(reader.next());
        BigInteger a=new BigInteger("184");
        BigInteger b=a;
        BigInteger c=new BigInteger("1");
        BigInteger d=c;
        
        
     for(int y=1319;y<p.intValue();y++){
          if(!(b.pow(y).divideAndRemainder(p)[1].intValue()==d.intValue())){
            
          }
         
          else if (b.pow(y).divideAndRemainder(p)[1].intValue()==d.intValue()) {
              
        System.out.println("y:"+y);
        
    }
         
     }
    }

    }
}