- 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.
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- Arabic numerals - - Describes the history of the Arabic numeral system that is in use nearly all over the world today.
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- 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.
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- Fun With Numbers - - Includes some lists of numerals, relating to basic operations performed on certain constants. Not updated since 1995.
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- 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.
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- 37 Heaven - - Collects information around the number thirty-seven.
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- Inverse Symbolic Calculator - - A set of programs and specialized tables of mathematical constants dedicated to the identification of real numbers.
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- 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.
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- Mathemagic - - In praise of the beauty of the numbers pi, e and phi.
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- Number Gossip - - Numerous special categories of numbers, searchable.
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- 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.
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- 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.
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- Sum Beastliness - - Some simple mathematics associated with 666, the Number of the Beast.
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- Triangular Numbers - - Properties of triangular numbers including reversible, happy, harshad, highly composite, deficient, abundant ones.
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- Vampire Numbers - - Numbers with a factorization containing the same digits, e.g. 1530 = 30*51.
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- Verbose.net - - Dedicated to the natural order of the universe and to the irrational and logical chaos it presents.
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- World of Numbers - - Includes a collection of randomly gathered numbers, curios, puzzles, palindromes and primes.
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