Search results
Results From The WOW.Com Content Network
Main page; Contents; Current events; Random article; About Wikipedia; Contact us; Help; Learn to edit; Community portal; Recent changes; Upload file
56 is: The sum of the first six triangular numbers (making it a tetrahedral number). [1] The number of ways to choose 3 out of 8 objects or 5 out of 8 objects, if order does not matter. The sum of six consecutive primes (3 + 5 + 7 + 11 + 13 + 17) a tetranacci number [2] and as a multiple of 7 and 8, a pronic number. [3]
Main page; Contents; Current events; Random article; About Wikipedia; Contact us; Donate
A natural number in the range of 10 126 and -10 126 is, as well as some larger numbers such as one centillion and one millinillion. zero : Optional. The value to use when the number is 0.
The first ordinal number that is not a natural number is expressed as ω; this is also the ordinal number of the set of natural numbers itself. The least ordinal of cardinality ℵ 0 (that is, the initial ordinal of ℵ 0 ) is ω but many well-ordered sets with cardinal number ℵ 0 have an ordinal number greater than ω .
Such a number is algebraic and can be expressed as the sum of a rational number and the square root of a rational number. Constructible number: A number representing a length that can be constructed using a compass and straightedge. Constructible numbers form a subfield of the field of algebraic numbers, and include the quadratic surds.
In number theory, a narcissistic number [1] [2] (also known as a pluperfect digital invariant (PPDI), [3] an Armstrong number [4] (after Michael F. Armstrong) [5] or a plus perfect number) [6] in a given number base is a number that is the sum of its own digits each raised to the power of the number of digits.
Unicode chart Supplemental Symbols and Pictographs}} provides a table listing the characters in the Supplemental Symbols and Pictographs block of Unicode. The display can be changed to show only rows containing emoticons using an optional parameter.