# Site about facts for every number **URL:** \ **Category:** Factual Questions\ **Created:** [January 7, 2015, 3:52am UTC](https://boards.straightdope.com/t/site-about-facts-for-every-number/709191 "2015-01-07T03:52:02Z")\ **Posts on this page:** 17\ **Page:** 1
**Author:** ![JohnClay](https://avatars.discourse-cdn.com/v4/letter/j/c37758/32.png) [@JohnClay](https://boards.straightdope.com/u/JohnClay)\ **Post date:** [January 7, 2015, 3:52am UTC](https://boards.straightdope.com/t/site-about-facts-for-every-number/709191/1 "2015-01-07T03:52:02Z")
Hi I remember there being a site that has interesting information about almost every smaller number even larger ones. It would say if it is a prime or more obscure information. ---
**Author:** ![The\_Joker\_and\_the\_Thief](https://avatars.discourse-cdn.com/v4/letter/t/e79b87/32.png) [@The\_Joker\_and\_the\_Thief](https://boards.straightdope.com/u/The_Joker_and_the_Thief)\ **Post date:** [January 7, 2015, 4:07am UTC](https://boards.straightdope.com/t/site-about-facts-for-every-number/709191/2 "2015-01-07T04:07:04Z")
Perhaps [The On-Line Encyclopedia of Integer Sequences](http://oeis.org/)? ---
**Author:** ![pulykamell](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/pulykamell/32/3166_2.png) [@pulykamell](https://boards.straightdope.com/u/pulykamell)\ **Post date:** [January 7, 2015, 4:09am UTC](https://boards.straightdope.com/t/site-about-facts-for-every-number/709191/3 "2015-01-07T04:09:33Z")
> [@JohnClay](#): > > Hi I remember there being a site that has interesting information about almost every smaller number even larger ones. It would say if it is a prime or more obscure information. [Wolfram Alpha](http://www.wolframalpha.com) gives you a lot of information if you just enter a number. ---
**Author:** ![ultrafilter](https://avatars.discourse-cdn.com/v4/letter/u/3d9bf3/32.png) [@ultrafilter](https://boards.straightdope.com/u/ultrafilter)\ **Post date:** [January 7, 2015, 4:50am UTC](https://boards.straightdope.com/t/site-about-facts-for-every-number/709191/4 "2015-01-07T04:50:50Z")
Wikipedia has most of that information. ---
**Author:** ![JohnClay](https://avatars.discourse-cdn.com/v4/letter/j/c37758/32.png) [@JohnClay](https://boards.straightdope.com/u/JohnClay)\ **Post date:** [January 7, 2015, 5:53am UTC](https://boards.straightdope.com/t/site-about-facts-for-every-number/709191/5 "2015-01-07T05:53:03Z")
> [@ultrafilter](#): > > Wikipedia has most of that information. > **[700 (number)](https://en.wikipedia.org/wiki/700_(number))** > > 700 (seven hundred) is the natural number following 699 and preceding 701. > It is the sum of four consecutive primes (167 + 173 + 179 + 181), the perimeter of a Pythagorean triangle (75 + 308 + 317) and a Harshad number. > Nearly all of the palindromic integers between 700 and 800 (i.e. nearly all numbers in this range that have both the hundreds and units digit be 7) are used as model numbers for Boeing Commercial Airplanes. Yeah e.g. for numbers in the 700s it has some information but I thought I remembered a site that had more information about random highish numbers like that. ---
**Author:** ![biqu](https://avatars.discourse-cdn.com/v4/letter/b/7feea3/32.png) [@biqu](https://boards.straightdope.com/u/biqu)\ **Post date:** [January 7, 2015, 9:18am UTC](https://boards.straightdope.com/t/site-about-facts-for-every-number/709191/6 "2015-01-07T09:18:21Z")
I like [Rob Munafro’s list](http://www.mrob.com/pub/math/numbers.html), which includes more than just the counting numbers. ---
**Author:** ![Wendell\_Wagner](https://avatars.discourse-cdn.com/v4/letter/w/8491ac/32.png) [@Wendell\_Wagner](https://boards.straightdope.com/u/Wendell_Wagner)\ **Post date:** [January 7, 2015, 9:41am UTC](https://boards.straightdope.com/t/site-about-facts-for-every-number/709191/7 "2015-01-07T09:41:10Z")
If you’re willing to buy a book (remember books, those paper and ink things?), there’s _The Penguin Dictionary of Curious and Interesting Numbers_ by David Wells which has everything you’re interested in. ---
**Author:** ![JohnClay](https://avatars.discourse-cdn.com/v4/letter/j/c37758/32.png) [@JohnClay](https://boards.straightdope.com/u/JohnClay)\ **Post date:** [January 7, 2015, 10:06am UTC](https://boards.straightdope.com/t/site-about-facts-for-every-number/709191/8 "2015-01-07T10:06:57Z")
> [@biqu](#): > > I like [Rob Munafro’s list](http://www.mrob.com/pub/math/numbers.html), which includes more than just the counting numbers. It’s a good site ---
**Author:** ![Thudlow\_Boink](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/thudlow_boink/32/320_2.png) [@Thudlow\_Boink](https://boards.straightdope.com/u/Thudlow_Boink)\ **Post date:** [January 7, 2015, 11:34pm UTC](https://boards.straightdope.com/t/site-about-facts-for-every-number/709191/9 "2015-01-07T23:34:40Z")
> [@Wendell\_Wagner](#): > > If you’re willing to buy a book (remember books, those paper and ink things?), there’s _The Penguin Dictionary of Curious and Interesting Numbers_ by David Wells which has everything you’re interested in. I have several books along these lines, including [Number Freak: From 1 to 200- The Hidden Language of Numbers Revealed](http://www.amazon.com/Number-Freak-Language-Numbers-Revealed/dp/0399534598/ref=sr_1_fkmr0_3?s=books&ie=UTF8&qid=1420673197&sr=1-3-fkmr0) [The Kingdom of Infinite Number: A Field Guide](http://www.amazon.com/The-Kingdom-Infinite-Number-Field/dp/0716744473/ref=tmm_pap_title_0?ie=UTF8&qid=1420673309&sr=1-1) [Adam Spencer’s Book of Numbers: A Bizarre and Hilarious Journey from 1 to 100](http://www.amazon.com/Adam-Spencers-Book-Numbers-Hilarious/dp/1568582897/ref=sr_1_1?s=books&ie=UTF8&qid=1420673321&sr=1-1) ---
**Author:** ![Wendell\_Wagner](https://avatars.discourse-cdn.com/v4/letter/w/8491ac/32.png) [@Wendell\_Wagner](https://boards.straightdope.com/u/Wendell_Wagner)\ **Post date:** [January 8, 2015, 12:44am UTC](https://boards.straightdope.com/t/site-about-facts-for-every-number/709191/10 "2015-01-08T00:44:05Z")
_The Penguin Dictionary of Curious and Interesting Numbers_ is much more thorough than any of those books. It has entries on over a thousand numbers. It has entries not just on integers but on fractions, irrational numbers, and transcendental numbers. ---
**Author:** ![breezman](https://avatars.discourse-cdn.com/v4/letter/b/4491bb/32.png) [@breezman](https://boards.straightdope.com/u/breezman)\ **Post date:** [January 8, 2015, 2:54am UTC](https://boards.straightdope.com/t/site-about-facts-for-every-number/709191/11 "2015-01-08T02:54:31Z")
There’s also [The Book of Numbers](http://www.amazon.com/Book-Numbers-John-H-Conway/dp/038797993X/ref=sr_1_1?s=books&ie=UTF8&qid=1420685642&sr=1-1&keywords=the+book+of+numbers). ---
**Author:** ![Knorf](https://avatars.discourse-cdn.com/v4/letter/k/58956e/32.png) [@Knorf](https://boards.straightdope.com/u/Knorf)\ **Post date:** [January 8, 2015, 3:26am UTC](https://boards.straightdope.com/t/site-about-facts-for-every-number/709191/12 "2015-01-08T03:26:38Z")
I’m awfully fond of [The On-Line Encyclopedia of Integer Sequences](https://oeis.org/). On a semi-related note. ---
**Author:** ![CalMeacham](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/calmeacham/32/35_2.png) [@CalMeacham](https://boards.straightdope.com/u/CalMeacham)\ **Post date:** [January 8, 2015, 12:34pm UTC](https://boards.straightdope.com/t/site-about-facts-for-every-number/709191/13 "2015-01-08T12:34:50Z")
> [@Wendell\_Wagner](#): > > _The Penguin Dictionary of Curious and Interesting Numbers_ is much more thorough than any of those books. It has entries on over a thousand numbers. It has entries not just on integers but on fractions, irrational numbers, and transcendental numbers. I bought this book when it came out, and have been fascinated by it for years. You beat me to it. The same guy also came out with the _Penguin Dictionary of Curious and Interesting Geometry_, which I also highly recommend. ---
**Author:** ![Knorf](https://avatars.discourse-cdn.com/v4/letter/k/58956e/32.png) [@Knorf](https://boards.straightdope.com/u/Knorf)\ **Post date:** [January 8, 2015, 5:57pm UTC](https://boards.straightdope.com/t/site-about-facts-for-every-number/709191/14 "2015-01-08T17:57:28Z")
And I see that I was beat to the punch by poster #2. \>whacks forehead\< ---
**Author:** ![Half\_Man\_Half\_Wit](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/half_man_half_wit/32/21766_2.png) [@Half\_Man\_Half\_Wit](https://boards.straightdope.com/u/Half_Man_Half_Wit)\ **Post date:** [January 9, 2015, 10:11am UTC](https://boards.straightdope.com/t/site-about-facts-for-every-number/709191/15 "2015-01-09T10:11:18Z")
There’s also the site “What’s Special About This Number?”, [http://www2.stetson.edu/~efriedma/numbers.html](http://www2.stetson.edu/~efriedma/numbers.html) ---
**Author:** ![Senegoid](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/senegoid/32/6606_2.png) [@Senegoid](https://boards.straightdope.com/u/Senegoid)\ **Post date:** [January 10, 2015, 4:41am UTC](https://boards.straightdope.com/t/site-about-facts-for-every-number/709191/16 "2015-01-10T04:41:12Z")
Do these various sources being cited also include metaphysical facts about numbers? Like, for example, “1” being the loneliest number? ---
**Author:** ![JohnClay](https://avatars.discourse-cdn.com/v4/letter/j/c37758/32.png) [@JohnClay](https://boards.straightdope.com/u/JohnClay)\ **Post date:** [January 14, 2015, 12:41am UTC](https://boards.straightdope.com/t/site-about-facts-for-every-number/709191/17 "2015-01-14T00:41:07Z")
This might be the page I found originally: > **[Prime Curios! Index: Numbers](https://t5k.org/curios/)** > > This is the complete index for > the prime curiosity collection--an exciting collection of curiosities, > wonders and trivia related to prime numbers and integer factorization. > Pleasant browsing for those who love mathematics at all... It has information about a lot of numbers - though the information is has something to do with prime numbers.