Numbers API - An API for interesting facts about numbers

[adharmad]

http://numbersapi.com/1729/math "1729 is a plain old number."

Can't recognize Hardy-Ramanujan number?

Also the smallest perfect number: http://numbersapi.com/6/math "6 is the smallest number of distinct isosceles right triangles that will tile an isosceles right triangle."

[divad12]

Ha, good catch. http://numbersapi.com/1729 (the trivia version) gives the Ramanujan fact, while we have multiple math facts for 6 (refresh a few times to get "smallest perfect number").

We're still working to build our database of facts. Feel free to send suggestions to numbersapi at google mail, and we may add a feature for user-submitted facts.

[spicyj]

See http://numbersapi.com/1729:

> 1729 is the smallest number representable in two different ways as a sum of two positive cubes, as Ramanujan stated on the spot.

[Scriptor]

It looks like they've fixed the one for 1729.

[theFco]

perhaps it is a pun on Hardy, who thought it was an uninteresting number?

[divad12]

Hi, I'm the co-creator of this service. Blog post with more info: http://david-hu.com/2012/03/05/announcing-numbers-api.html

We welcome any feedback and are willing to answer any questions. Thanks!

[yahelc]

Minor bug with your ticker and negative numbers: http://cl.ly/3S1x1H3t1t1D22122A0z

[saraid216]

Is there a way to suggest entries?

[michaelochurch]

We will finally be able to answer humanity's most pressing question: what is the smallest uninteresting positive integer?

[ewoutkleinsmann]

Some will argue that such a number doesn't exist (http://en.wikipedia.org/wiki/Interesting_number_paradox). Others say it is 11630 (http://www.nathanieljohnston.com/2009/06/11630-is-the-first-...)

[vyrotek]

what is the smallest uninteresting positive integer?

Doesn't discovering that unique number instantly make it interesting? :)

[rflrob]

It's an API, so I have this code running now:

    for i in xrange(10000):
        print i
        trivia = requests.get('http://numbersapi.com/%d' % i).text
        math = requests.get('http://numbersapi.com/%d/math' % i).text
        if 'boring' in math and ('plain' in trivia or 'boring' in trivia):
            print math, trivia    
            break
        time.sleep(2)

[drostie]

http://numbersapi.com/1321/trivia has given me both "1321 is a most unremarkable number" and "1321 is an uninteresting number", to give an upper bound. ;-)

[yahelc]

223.

EDIT: 219 is definitely smaller than 223.

[alexchamberlain]

I hope you know the answer to this?

[searke]

You can get a lot of number facts using Wolfram|Alpha and its API

http://www.wolframalpha.com/input/?i=1729

[divad12]

Wolfram Alpha is great for mathematical properties of numbers, while we have trivia facts and are looking to gather more (eg. from world records, numbers in nature, statistics, almanacs, news).

[adrianp]

6174 is Kaprekar's constant: http://en.wikipedia.org/wiki/Kaprekar_constant

[petercooper]

Similar - The On-Line Encyclopedia of Integer Sequences: https://oeis.org/

[freditup]

Don't forget a crossdomain.xml file!

[gmaster1440]

http://numbersapi.com/#1337 :(

[divad12]

Oops, terrible oversight. Fixed now - http://numbersapi.com/#1337 :)

Feel free to send entry suggestions to numbersapi at google mail. We may add a feature for this soon.

[jastanton]

420, 666, and 777

[gburt]

Why?