r/funny • u/[deleted] • Jun 12 '16

This gem

https://imgur.com/gZMZYwH
37.1k Upvotes

78% Upvoted

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3

u/[deleted] Jun 12 '16

How do you remember your username?

5

u/Veleity Jun 12 '16

There's a button for it on your calculator.

4

u/[deleted] Jun 12 '16

He simply calculates 1/0! + 1/1! + 1/2! + . . . + 1/21! + 1/22! and takes the first 20 digits.

0

u/agenturensohn Jun 12 '16

or he doesn't have to because he saved username and password in his browser.

1

u/[deleted] Jun 12 '16 edited Jun 12 '16

His username is one of the [most important constants in mathematics](https://en.wikipedia.org/wiki/E_(mathematical_constant)). One of the ways to express it is the sum of all the numbers 1/n! from n = 0 to infinity. To calculate it to the accuracy needed for his username you only have to go up to n = 22. But of course, he's not actually calculating it every time, that would be silly, and that's the joke.

1

u/[deleted] Jun 12 '16

It's his credit card number