Problem 56: Considering natural numbers of the form, ab, where a, b < 100, what is the maximum digital sum?
Digital sum, ie: 47 = 4+7=11
package runner;
import java.math.BigInteger;
class runner
{
public static void main (String[] args) throws java.lang.Exception
{
long time = System.currentTimeMillis();
int lsum = 0;
for(int a=2;a<100;a++){
BigInteger b_a = new BigInteger(""+a);
for(int b=2;b<100;b++){
BigInteger pow = b_a.pow(b);
String powStr = pow.toString();
int sum = 0;
for(int i=0;i