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Large Factorials in LISP

/ Published in: Lisp
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Large factorials are easy to do in LISP, although a number above (2000!) may crash it. I designed this because of an online post from a mathematician talking about the number 1000! . Code like this is difficult to write in C-like languages, but a snap in LISP, as the following code demonstrates.

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  1. (defun factorial(x)
  2.    (cond ((zerop x) 1)
  3.          ('T (* x (factorial (1- x)))) ))
  4.  
  5. (factorial 1000)

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