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2. List of numeral systems - Wikipedia

   en.wikipedia.org/wiki/List_of_numeral_systems

   Such method is 6.7% more efficient than MIME-64 which encodes a 24 bit number into 4 printable characters. 89: 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 ...

3. Numeral system - Wikipedia

   en.wikipedia.org/wiki/Numeral_system

   A numeral system is a writing system for expressing numbers; that is, a mathematical notation for representing numbers of a given set, using digits or other symbols in a consistent manner. The same sequence of symbols may represent different numbers in different numeral systems.

4. List of types of numbers - Wikipedia

   en.wikipedia.org/wiki/List_of_types_of_numbers

   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.

5. Positional notation - Wikipedia

   en.wikipedia.org/wiki/Positional_notation

   The factorial number system uses a varying radix, giving factorials as place values; they are related to Chinese remainder theorem and residue number system enumerations. This system effectively enumerates permutations. A derivative of this uses the Towers of Hanoi puzzle configuration as a counting system. The configuration of the towers can ...

6. Category:Numeral systems - Wikipedia

   en.wikipedia.org/wiki/Category:Numeral_systems

   Numeration or numeral systems are about the names and naming systems that are used in the spoken/written language for numbers, and the digit symbols and notational system used to write numbers with digits.

7. Non-integer base of numeration - Wikipedia

   en.wikipedia.org/wiki/Non-integer_base_of_numeration

   This means that the integer part of the natural logarithm of a number in base e counts the number of digits before the separating point in that number, minus one. The base e is the most economical choice of radix β > 1, [ 4 ] where the radix economy is measured as the product of the radix and the length of the string of symbols needed to ...

8. History of ancient numeral systems - Wikipedia

   en.wikipedia.org/wiki/History_of_ancient_numeral...

   As understood through analyses of early proto-cuneiform notations from the city of Uruk, there were more than a dozen different counting systems, [18] including a general system for counting most discrete objects (such as animals, tools, and people) and specialized systems for counting cheese and grain products, volumes of grain (including ...

9. Magic triangle (mathematics) - Wikipedia

   en.wikipedia.org/wiki/Magic_triangle_(mathematics)

   Other magic triangles use Triangular number or square number of vertices to form magic figure. Matthew Wright and his students in St. Olaf College developed magic triangles with square numbers. In their magic triangles, the sum of the k-th row and the (n-k+1)-th row is same for all k.