Numeric and counting systems

Position based

 * Bengali numerals
 * Devanagari numerals
 * Gujarati numerals
 * Gurmukhi numerals
 * Hindu-Arabic numerals
 * Kannada numerals
 * Kayah numerals
 * Khmer numerals
 * Lao numerals
 * Malayalam numerals
 * Myanmar numerals
 * Nko numerals
 * Oriya numerals
 * Osmanya numerals
 * Tamil numerals
 * Telugu numerals
 * Thai numerals
 * Tibetan numerals
 * Vai numerals

Positionless

 * Cyrillic numerals
 * Ethiopic numerals (positioned?)
 * Hangzhou numerals
 * Hebrew numerals
 * Roman numerals

Bases

 * multibase encoding
 * systematic symbols

Number classes

 * natural number
 * whole number
 * real number
 * transcendental number
 * fraction
 * imaginary number
 * algebraic number
 * computable number
 * definable number

Types of infinity

 * Aleph number

Methods of digitally encoding numeric values can be found in Elements of File Formats.