0 - Zero
(4)
Fibonacci Numbers
(25)
Infinity
(6)
Integers
(23)
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Pi
(85)
e
(12)
phi
(27)
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.
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.
Wikipedia - Mathematical constant
A list of constants with links to more detailed information.
Vampire Numbers
Numbers with a factorization containing the same digits, e.g. 1530 = 30*51.
Notable Properties of Specific Numbers
A list of numbers with interesting properties.
37 Heaven
Collects information around the number thirty-seven.
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.
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.
Catalan Number -- MathWorld
Illustration of the Catalan numbers related to Euler's polygon division problem.
Mathemagic
In praise of the beauty of the numbers pi, e and phi.
Mathematical Constants and Computation
Essays, references, links, software.
Inverse Symbolic Calculator
A set of programs and specialized tables of mathematical constants dedicated to the identification of real numbers.
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.
Brun's Constant
Description of the constant, some related work and links to some further reading.
Favorite Mathematical Constants
An in-depth explanation of the most important math constants.
Heilbronn Triangle Constants
Heilbronn Triangle Constants
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.
Arabic numerals
Describes the history of the arabic numeral system that is in use nearly all over the world today.
Indian numerals
Describes the history of the indian numeral system.
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.
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.
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.
FAQ on Special Numbers
Answers to Frequently asked questions about special numbers.
Jewish Encyclopedia: Numbers and Numerals
Discusses the uses and symbolism of various numbers in Hebrew literature.
Catalan's Constant - G
Describes the mathematics behind the constant.
Euler-Mascheroni Constant - g
Describes the mathematics behind this constant.
Feigenbaum Constants
Describes the constants and their mathematical basis.
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.
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.
Fun With Numbers
Includes some lists of numerals, relating to basic operations performed on certain constants. Not updated since 1995.
Pi Squared over Six
Dedicated to the transcendental number pi squared over six.
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.
Triangular Numbers
Properties of triangular numbers including reversible, happy, harshad, highly composite, deficient, abundant ones.
Number Gossip
Numerous special categories of numbers, searchable.
Verbose.net
Dedicated to the natural order of the universe and to the irrational and logical chaos it presents.
World of Numbers
Contains a collection of randomly gathered numbers, curios, puzzles, palindromes and primes.
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