| 37 Heaven: Collects information around the number thirty-seven. |
| 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. |
| Apéry's Constant: Describes the definition of the constant and some interpretations as well as a list of references to further work about the constant. |
| Arabic numerals: Describes the history of the arabic numeral system that is in use nearly all over the world today. |
| 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. |
| Brun's Constant: Description of the constant, some related work and links to some further reading. |
| Catalan Number -- MathWorld: Illustration of the Catalan numbers related to Euler's polygon division problem. |
| Catalan's Constant - G: Describes the mathematics behind the constant. |
| Deep Thought - 42: A website devoted to tracking the Ultimate Answer provided by the computer Deep Thought. Lists sightings of the number since early history. |
| Euler-Mascheroni Constant - g: Describes the mathematics behind this constant. |
| FAQ on Special Numbers: Answers to Frequently asked questions about special numbers. |
| Favorite Mathematical Constants: An in-depth explanation of the most important math constants. |
| Feigenbaum Constants: Describes the constants and their mathematical basis. |
| 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. |
| 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. |
| Fun With Numbers: Includes some lists of numerals, relating to basic operations performed on certain constants. Not updated since 1995. |
| Harry J. Smith's Fun With Mathematics: Fun math stuff, including computing pi, perfect numbers, Fibonacci numbers, the tesseract, a look into 4-dimensional space. |
| Heilbronn Triangle Constants: Heilbronn Triangle Constants |
| Indian numerals: Describes the history of the indian numeral system. |
| Inverse Symbolic Calculator: A set of programs and specialized tables of mathematical constants dedicated to the identification of real numbers. |
| Jewish Encyclopedia: Numbers and Numerals: Discusses the uses and symbolism of various numbers in Hebrew literature. |
| 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. |
| Mathemagic: In praise of the beauty of the numbers pi, e and phi. |
| Mathematical Constants and Computation: Essays, references, links, software. |
| Notable Properties of Specific Numbers: A list of numbers with interesting properties. |
| Number Gossip: Numerous special categories of numbers, searchable. |
| Pi Squared over Six: Dedicated to the transcendental number pi squared over six. |
| 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. |
| 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. |
| 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. |
| Sum Beastliness: Some simple mathematics associated with 666, the Number of the Beast. |
| The Golden Pentagon: MathPages depiction of tiling a plane using a progression of equilateral triangles dividing a pentagon. Most interesting is that this pentagon is uniquely and recursively divided by triangles, just as is seen in the more common recursive division of the Golden Rectangle. |
| Triangular Numbers: Properties of triangular numbers including reversible, happy, harshad, highly composite, deficient, abundant ones. |
| Vampire Numbers: Numbers with a factorization containing the same digits, e.g. 1530 = 30*51. |
| Verbose.net: Dedicated to the natural order of the universe and to the irrational and logical chaos it presents. |
| Wikipedia - Mathematical constant: A list of constants with links to more detailed information. |
| World of Numbers: Contains a collection of randomly gathered numbers, curios, puzzles, palindromes and primes. |
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