Specific Numbers Recreations Math

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• - Numbers with a factorization containing the same digits, e.g. 1530 = 30*51.
  
• - Dedicated to the natural order of the universe and to the irrational and logical chaos it presents.
  
• - 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.
  
• - Describes the constants and their mathematical basis.
  
• - A long list of links to pages about Fibonacci and his numbers, the golden ratio and applications in art and science.
  
• - Published as math.NT/0006089, this note investigates numbers that are normal to no base whatsoever, and writes down explicitly such a number.
  
• - Contains a collection of randomly gathered numbers, curios, puzzles, palindromes and primes.
  
• - Some simple mathematics associated with 666, the Number of the Beast.
  
• - Collects information around the number thirty-seven.
  
• - A list of numbers with interesting properties.
  
• - In praise of the beauty of the numbers pi, e and phi.
  
• - Fun math stuff, including computing pi, perfect numbers, Fibonacci numbers, the tesseract, a look into 4-dimensional space.
  
• - A list of constants with links to more detailed information.
  
• - Describes the mathematics behind the constant.
  
• - Several million digits of e, and the square roots of 2, 3, 5, 6, 7, 8, and 10.
  
• - Includes some lists of numerals, relating to basic operations performed on certain constants. Not updated since 1995.
  
• - 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 G
  
• - Heilbronn Triangle Constants
  
• - 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.
  
• - Describes the definition of the constant and some interpretations as well as a list of references to further work about the constant.
  
• - 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.
  
• - A set of programs and specialized tables of mathematical constants dedicated to the identification of real numbers.
  
• - Description of the constant, some related work and links to some further reading.
  
• - Describes the history of the indian numeral system.
  
• - An in-depth explanation of the most important math constants.
  
• - Numerous special categories of numbers, searchable.
  
• - Describes the mathematics behind this constant.
  
• - Discusses the uses and symbolism of various numbers in Hebrew literature.
  
• - Illustration of the Catalan numbers related to Euler's polygon division problem.
  
• - Dedicated to the transcendental number pi squared over six.
  
• - Puzzles and things to do, for schools, teachers, colleges up to university level students, or just for recreation.
  
• - Essays, references, links, software.
  
• - Answers to Frequently asked questions about special numbers.
  
• - Describes the history of the arabic numeral system that is in use nearly all over the world today.
  
• - Properties of triangular numbers including reversible, happy, harshad, highly composite, deficient, abundant ones.
  
• - 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.