Web Directory

» 37 Heaven
   Collects information around the number thirty-seven.
   http://magliery.com/37/

» Absolutely Abnormal Numbers
   Published as math.NT/0006089, this note investigates numbers that are normal to no base whatsoever, and writes down explicitly such a number.
   http://arxiv.org/abs/math.NT/0006089/

» Arabic numerals
   Describes the history of the Arabic numeral system that is in use nearly all over the world today.
   http://www-history.mcs.st-andrews.ac.uk/history/HistTopics/Arabic_numerals.html

» Ask Dr. Math: History of the Terms Google and Googleplex
   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://mathforum.org/library/drmath/view/57575.html

» Catalan Number -- MathWorld
   Illustration of the Catalan numbers related to Euler's polygon division problem.
   http://mathworld.wolfram.com/CatalanNumber.html

» FAQ on Special Numbers
   Answers to Frequently asked questions about special numbers.
   http://www.faqs.org/faqs/sci-math-faq/specialnumbers/

» Fibonacci Numbers and the Golden section in Nature
   Puzzles and things to do, for schools, teachers, colleges up to university level students, or just for recreation.
   http://www.mcs.surrey.ac.uk/Personal/R.Knott/Fibonacci/fibnat.html

» Friedmann's S-Numbers
   These are numbers where an expression can be given using the operations of addition and squaring, using the digits of a number in order, which gives the original number. Algorithms, theorems and results.
   http://www.meden.demon.co.uk/Mathematics/S-Numbers/S-Numbers.html

» Indian numerals
   Describes the history of the Indian numeral system.
   http://www-history.mcs.st-andrews.ac.uk/history/HistTopics/Indian_numerals.html

» Inverse Symbolic Calculator
   A set of programs and specialized tables of mathematical constants dedicated to the identification of real numbers.
   http://oldweb.cecm.sfu.ca/projects/ISC/ISCmain.html

» Jewish Encyclopedia: Numbers and Numerals
   Discusses the uses and symbolism of various numbers in Hebrew literature.
   http://www.jewishencyclopedia.com/view.jsp?artid=366&letter=N

» Just Who is Mr. 666?
   Uses gematria to calculate the number of the beast, and evaluates what it may mean w/r specific Hebrew words and names in the Bible adding up to 666.
   http://www.eingedi.org/666-2.html

» Mathemagic
   Many minor miracles for magically-minded mathematicians!
   http://www.mathsisfun.net/magic.htm

» Mathematical Constants
   Stephen Finch has published a book of this title and here provides various supplementary materials.
   http://algo.inria.fr/bsolve/constant/apery/apery.html

» Mathematical Constants and Computation
   Essays, references, links, software.
   http://numbers.computation.free.fr/Constants/constants.html

» Number Gossip
   Numerous special categories of numbers, searchable.
   http://www.numbergossip.com/

» RJN's More Digits of Irrational Numbers
   Several million digits of e, and the square roots of 2, 3, 5, 6, 7, 8, and 10.
   http://antwrp.gsfc.nasa.gov/htmltest/rjn_dig.html

» Square root of 2
   Provides information about the square root of 2, lists the first 1000 digits and provides links to pages with up to 5 million digits. Also contains download links for programming libraries for calculating numbers with high precision or many digits.
   http://www.rossi.com/sqr2.htm

» Stewy's Site
   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://stewy6.tripod.com/infinitesimal.htm

» Sum Beastliness
   Some simple mathematics associated with 666, the Number of the Beast.
   http://web.onetel.com/~amygdala/articles/scimaths/666.html

» Triangular Numbers
   Properties of triangular numbers including reversible, happy, harshad, highly composite, deficient, abundant ones.
   http://www.shyamsundergupta.com/triangle.htm

» Vampire Numbers
   Numbers with a factorization containing the same digits, e.g. 1530 = 30*51.
   http://users.cybercity.dk/~dsl522332/math/vampires/

» Verbose.net
   Dedicated to the natural order of the universe and to the irrational and logical chaos it presents.
   http://www.verbose.net/

» Wikipedia - Mathematical constant
   A list of constants with links to more detailed information.
   http://en.wikipedia.org/wiki/Mathematical_constant

» World of Numbers
   Includes a collection of randomly gathered numbers, curios, puzzles, palindromes and primes.
   http://www.worldofnumbers.com/