This is a list of numeral system topics (and "numeric representations"), by Wikipedia page. It does not systematically list computer formats for storing numbers (computer numbering formats). See also number names.

Arranged by base

• Radix, radix point, mixed radix, base (mathematics)
• Unary numeral system (base 1)
  • Tally mark
• Binary numeral system (base 2)
• Negabinary numeral system (base -2)
• Ternary numeral system numeral system (base 3)
• Balanced ternary numeral system (base 3)
• Negaternary numeral system (base -3)
• Quaternary numeral system (base 4)
• Quater-imaginary base (base 2√-1)
• Quinary numeral system (base 5)
  • Pentimal system
• Senary numeral system (base 6)
• Septenary numeral system (base 7)
• Octal numeral system (base 8)
• Nonary (novenary) numeral system (base 9)
• Decimal (denary) numeral system (base 10)
  • Bi-quinary coded decimal
• Negadecimal numeral system (base -10)
• Duodecimal (dozenal) numeral system (base 12)
• Hexadecimal numeral system (base 16)
• Vigesimal numeral system (base 20)
• Sexagesimal numeral system (base 60)

Arranged by culture

• Australian Aboriginal enumeration
• Armenian numerals
• Babylonian numerals
• Chinese numerals
  • Rod numerals
• Colombian numerals
• Greek numerals
• Hebrew numerals
• Arabic numeral system
  • Arabic numerals
  • Indian numerals
  • Thai numerals
• Japanese numerals
• Korean numerals
• Maya numerals
• Mokshan numeric system
• Roman numerals

• Welsh numerals

Other

• Algorism
• Goodstein's theorem
• Myriad
• Non-standard positional numeral systems