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The Number Empire

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Visit this site: http://www.numberempire.com/
Author:Vitalii Vanovschi
Description: Enter a positive integer up to 10^12, press the "Go!" button, and The Number Empire states -- in yes/no format -- whether you entered a prime number, a Bell number, a Catalan number, or a factorial. The same single click displays the integer written out in words, as well as in binary, octal, and hexadecimal; and calculates its sine, cosine, and square root. Other JavaScript on site determines derivatives, integrals, and limits; factors numbers or reports back the smallest prime greater or the largest prime smaller than your input; renders LaTeX equations; and defines and generates Fibonacci numbers, Bernoulli numbers, Euler numbers, and factorials.
Levels: Middle School (6-8), High School (9-12), College, Research
Languages: English
Resource Types: Editors/Typesetting, General Software Miscellaneous, Web Interactive/Java
Math Topics: Factorials, Factors, Number Sense/About Numbers, Calculus (Single Variable), Number Theory, Trigonometry

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