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."
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.
Thanks for pointing that out. The ticker came from some work I did while interning at Khan Academy, and was not originally meant for negative numbers. If I get some time, I may make it into a jQuery plugin and make it work for more cases and be configurable.
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)
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. ;-)
Edit: on the other hand, in the math category "219 is the smallest number that can be represented as a sum of four positive cubes in two different ways."
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).
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."