StackOverflowError computing factorial of a BigInteger?

Question

I am trying to write a Java program to calculate factorial of a large number. It seems BigInteger is not able to hold such a large number.

The below is

Answer 1

Try this instead, an iterative algorithm:

public static BigInteger getFactorial(int num) {
    BigInteger fact = BigInteger.valueOf(1);
    for (int i = 1; i <= num; i++)
        fact = fact.multiply(BigInteger.valueOf(i));
    return fact;
}