Specific Numbers Recreations Math

Specific Numbers Recreations Math

Specific Numbers

Some say that numbers aren't as important as actual functions, but we say they are! :-) For anyone who has wondered why 13 is unlucky, why you can't eat pi, or why 1 is the multiplicative identity, this is the category you've been searching for since grade school. Whatever intellectual curiosity has been nagging at you since you first wrote the number 5, you will be likely to find an answer to your question here. And if not, submit your own! Also: Definitions of important constants, formulas to compute them and formulas that use them.

Top: Science: Math: Recreations: Specific Numbers

See Also:

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

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