Maximum call stack size exceeded with very large factorial calculations

[polarstoat]

During the performance testing for #2 , it was discovered that very large factorial calculations using the current method of recursion can cause the call stack size to be exceeded.

A Stack Overflow answer suggests this can be fixed by wrapping the recursive function call in a setImmediate function.

It's not yet known at exactly what size factorial calculation the maximum call stack size will be exceeded.

[polarstoat]

In Node.js on my machine this failure seems to occur when attempting to calculate the factorial of 11423 and above. This appears to be close to the 11034 maximum recursive calls documented in this blog post, but that may be coincidental.