Author Topic: One million factorial? (Easiest way to find)  (Read 985 times)

0 Members and 1 Guest are viewing this topic.

Offline IDontNotDoThings

  • Posts: 3627
One million factorial? (Easiest way to find)
« on: December 19, 2017, 04:23:06 AM »
So, I'm trying to find a way to calculate one million factorial in the simplest way I can understand. For those who don't know, a million factorial (or 1,000,000!) = 1,000,000 * 999,999 * 999,998 * 999,997 * etc. I know how to find the sum (which is 500,000,500,000 using arithmetic series), but not the product. Is there a way to figure it out without having to run it in a coding language? Thanks in advance.

(& believe it or not this isn't for school I just actually wanted to know)  :justjen
ドリームシアターはあまり好きではありませんが、ペンと紙を持っていたので、なんてこった。

Offline Implode

  • Lord of the Squids
  • DTF.org Alumni
  • ****
  • Posts: 5821
  • Gender: Male
Re: One million factorial? (Easiest way to find)
« Reply #1 on: December 19, 2017, 08:50:19 AM »

Offline Logain Ablar

  • False Dragon
  • Posts: 1092
  • Gender: Male
Re: One million factorial? (Easiest way to find)
« Reply #2 on: December 19, 2017, 09:02:33 AM »
https://www.wolframalpha.com/input/?i=What+is+one+million+factorial%3F

8.2639316883312400623766461031726662911353479789638 × 10^5565708

(apparently  :))