向大神求教~~~JavaBigInteger类

import java.math.*;
public class bignumbercounter {
public static void main(String[] args){
BigInteger a= new BigInteger("Math.pow(10,50)");
BigInteger b=new BigInteger("2");
BigInteger c=new BigInteger("3");
BigInteger zero=new BigInteger("0");
BigInteger one=new BigInteger("1");
int counter=0;
for(counter=0;counter<11;a.add(one)){
if(a.mod(b)==zero){
counter++;
System.out.println(a);
}
else{
if(a.mod(c)==zero)
counter++;
System.out.println(a);
}

}
}
}
运行不了~求大神指教。

BigInteger a= new BigInteger("10").pow(50);