BigInteger Factorial in Java

import java.math.BigInteger;
import java.util.Scanner;
public class Main {
public static void main(String[] args) {
Scanner scan = new Scanner(;
while(scan.hasNextBigInteger()) {
int input = scan.nextInt();
BigInteger fact = factorial(input);
public static BigInteger factorial(int number) {
BigInteger factorial = BigInteger.ONE;
for (int i = number; i > 0; i–) {
factorial = factorial.multiply(BigInteger.valueOf(i));

return factorial;


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