What’s Special About This Number?

Friday 11 November 2005 — This is over 19 years old. Be careful.

For you math geeks out there: have you ever wanted to know what was unusual about a particular number and had nowhere to go? What’s Special About This Number? can tell you. For example, 1789 is the smallest number with the property that its first 4 multiples contain the digit 7. And that’s one of the more ordinary factoids in the list...

Comments

[gravatar]
Tim 2:23 AM on 12 Nov 2005
This site is in a similiar vein, but provides a few more titbits for each number:
Prime Curios!

(It has info on any kind of number, despite the title.)
[gravatar]
Damien Katz 8:15 PM on 14 Nov 2005
Did you notice the fav.ico for the site is 68? When I look at the entry for 68, it says:

"68 is the last 2-digit string to appear in the decimal expansion of π [pi]."

Huh? Is that a joke or am I misunderstanding what that says?
[gravatar]
Ned Batchelder 8:38 PM on 14 Nov 2005
I didn't notice that! I guess it is a joke...
[gravatar]
majong 3:29 PM on 23 Oct 2008
Your site is quite boring!

The best exhaustive site on numbers is simply:
http://www.archimedes-lab.org/numbers/Num1_69.html

Add a comment:

Ignore this:
Leave this empty:
Name is required. Either email or web are required. Email won't be displayed and I won't spam you. Your web site won't be indexed by search engines.
Don't put anything here:
Leave this empty:
Comment text is Markdown.