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Undecimal (also known as unodecimal, undenary, and the base 11 numeral system) is a positional numeral system that uses eleven as its base. While no known society counts by elevens, two are purported to have done so: the Māori (one of the two Polynesian peoples of New Zealand ) and the Pañgwa (a Bantu -speaking people of Tanzania ).
Largest base for which all left-truncatable primes are known. 90: Nonagesimal: Related to Goormaghtigh conjecture for the generalized repunit numbers (111 in base 90 = 1111111111111 in base 2). 95: Number of printable ASCII characters. [65] 96: Total number of character codes in the (six) ASCII sticks containing printable characters. 97
In books and articles, when using initially the written abbreviations of number bases, the base is not subsequently printed: it is assumed that binary 1111011 is the same as 1111011 2. The base b may also be indicated by the phrase "base-b". So binary numbers are "base-2"; octal numbers are "base-8"; decimal numbers are "base-10"; and so on.
Hexadecimal: Base 16, widely used by computer system designers and programmers, as it provides a more human-friendly representation of binary-coded values. Octal: Base 8, occasionally used by computer system designers and programmers. Duodecimal: Base 12, a numeral system that is convenient because of the many factors of 12.
English number words include numerals and various words derived from them, ... 11: eleven 2: two: 12 ... Thus one-half would be written 0.5 in decimal, base ten ...
The number of free polyominoes with n ... 11, 23, 46, ... The number of binary rooted ... A Harshad number in base 10 is an integer that is divisible by the sum of ...
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The sum of numbers in a General Fibonacci integer sequence that correspond with the nonzero digits in the base-φ number, is the multiplication of the base-φ number and the element at the zero-position in the sequence. For example: product 10 (10100.0101 base-φ) and 25 (zero position) = 5 + 10 + 65 + 170 = 250