Septenary
The septenary numeral system is the base-7 number system, and uses the digits 0-6. Septenary is a very good numeral system for repeating fractions, but poor for terminating fractions.
Positional systems
- Binary1
- Ternary1
- Quaternary1
- Quinary1
- Senary1
- Septenary1
- Octal1
- Nonary1
- Decimal1
- Undecimal1
- Duodecimal1
- Base 131
- Hexadecimal1
- Vigesimal1
Numeral systems
Languages
- Englishone
- Germaneins
- Spanishuno
- Swedishett