Convert from Base-10 to Base-N

package StringAndTextProcessing;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.math.BigInteger;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.stream.Collectors;

public class P01_ConvertFromBase10ToBaseN {
    public static void main(String[] args) throws IOException {
        BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));

        long[] input = Arrays.stream(reader.readLine()
                .split("\\s+"))
                .mapToLong(Long::parseLong)
                .toArray();

        ArrayList<Long> nums = new ArrayList<>();
        for (long i : input) {
            nums.add(i);
        }
        //nums = Arrays.stream(reader.readLine().split("\\s+")).map(BigInteger::new );
        long n = nums.get(0);
        BigInteger number = BigInteger.valueOf(nums.get(1));
        BigInteger remainder = new BigInteger("0");
        String result = "";

        if (n >= 2 && n <= 10) {
            while (number.compareTo(BigInteger.ZERO) > 0) {
                BigInteger bigN = BigInteger.valueOf(n);
                remainder = number.mod(bigN);
                number = number.divide(bigN);

                result = String.valueOf(remainder) + result;
            }
            System.out.println(result);
        } else {
            System.out.println(0);
        }
    }
}