public static void extraLongFactorials(int n) {
        BigInteger factorial = calculateFactorial(n);
        System.out.println(factorial);
    }

    public static BigInteger calculateFactorial(int n){
        BigInteger result = BigInteger.ONE;
        for(int i = 2; i <= n; i++){
            result = result.multiply(BigInteger.valueOf(i));
        }
        return result;
    }