Home > Science > Math > Recreations > Specific Numbers
Some say that numbers aren't as important as actual functions, but we say they are! :-) For anyone who has wondered why 13 is unlucky, why you can't eat pi, or why 1 is the multiplicative identity, this is the category you've been searching for since grade school. Whatever intellectual curiosity has been nagging at you since you first wrote the number 5, you will be likely to find an answer to your question here. And if not, submit your own! Also: Definitions of important constants, formulas to compute them and formulas that use them.
http://magliery.com/37/
Collects information around the number thirty-seven.
http://arxiv.org/abs/math.NT/0006089/
Published as math.NT/0006089, this note investigates numbers that are normal to no base whatsoever, and writes down explicitly such a number.
http://www-history.mcs.st-andrews.ac.uk/history/HistTopics/Arabic_numerals.html
Describes the history of the Arabic numeral system that is in use nearly all over the world today.
http://mathforum.org/library/drmath/view/57575.html
Explains how these very large numbers (1 followed by a hundred zeroes, and 1 followed by a google of zeroes, respectively) were named. With links to references. From Swarthmore's Dr. Math.
http://mathworld.wolfram.com/CatalanNumber.html
Illustration of the Catalan numbers related to Euler's polygon division problem.
http://www.faqs.org/faqs/sci-math-faq/specialnumbers/
Answers to Frequently asked questions about special numbers.
http://www.mcs.surrey.ac.uk/Personal/R.Knott/Fibonacci/fibnat.html
Puzzles and things to do, for schools, teachers, colleges up to university level students, or just for recreation.
http://www-history.mcs.st-andrews.ac.uk/history/HistTopics/Indian_numerals.html
Describes the history of the Indian numeral system.
http://www.jewishencyclopedia.com/view.jsp?artid=366&letter=N
Discusses the uses and symbolism of various numbers in Hebrew literature.
http://numbers.computation.free.fr/Constants/constants.html
Essays, references, links, software.
http://apod.nasa.gov/htmltest/rjn_dig.html
Several million digits of e, and the square roots of 2, 3, 5, 6, 7, 8, and 10.
http://stewy6.tripod.com/infinitesimal.htm
The infinitesimal is the opposite of infinity, and mathematicians still argue over its existence. This page probes into one of the weirdest numbers in mathematics.
http://web.onetel.com/~amygdala/articles/scimaths/666.html
Some simple mathematics associated with 666, the Number of the Beast.
http://www.timwarnock.org/blog/
Dedicated to the natural order of the universe and to the irrational and logical chaos it presents.
http://www.shyamsundergupta.com/triangle.htm
Properties of triangular numbers including reversible, happy, harshad, highly composite, deficient, abundant ones.
http://en.wikipedia.org/wiki/Mathematical_constant
A list of constants with links to more detailed information.
http://www.worldofnumbers.com/
Includes a collection of randomly gathered numbers, curios, puzzles, palindromes and primes.
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