algorism arabic numerals armenian numerals australian aboriginal enumeration babylonian numerals balanced ternary bi-quinary coded decimal binary numeral system chinese numerals colombian numerals computer numbering formats decimal duodecimal greek numerals hebrew numerals hexadecimal indian numerals japanese numerals korean numerals maya numerals mixed radix myriad non-standard positional numeral systems nonary number names numeral system octal pentimal system quater-imaginary base quaternary numeral system quinary radix radix point roman numerals senary septenary sexagesimal ternary numeral system thai numerals unary numeral system vigesimal