BASE 5

QUINARY SYSTEM

• Originated because of the five fingers on a hand
• Can only be multiplied by four
• Five is a prime number
• The main usage today is the Biquinary system

BIQUINARY

• Biquinary is a decimal system using 2 and 5 as sub-bases
• Biquinary is found in the Wolof and Khmar languages
• Roman numerals are a biquinary system

OTHER QUINARY DECIMAL SYSTEMS

• Triquinary- a pentadecimal system with 3 and 5 as sub-bases
• Quadquinary- a vigesimal system using 4 and 5 as sub-bases. Found in Nahautl and Mayan numerals
• Pentavigesimal- A positional numeral system with 25 specific digits