Senary

A senary numeral system (also known as base-6, heximal, or seximal) is a number system that uses 6 digits (0, 1, 2, 3, 4 and 5). Examples are 12 in senary is 20, and 35 in senary is 55.

In senary, when it reaches 5, it will not be 6 because 6 is not in the senary system, so you add a 1 in front and 0 on everything else.^[1][2]

Decimal is on the left and Senary is on the right.

• 0 = 0
• 1 = 1
• 2 = 2
• 3 = 3
• 4 = 4
• 5 = 5
• 6 = 10
• 7 = 11
• 8 = 12
• 9 = 13
• 10 = 14
• 11 = 15
• 12 = 20
• 13 = 21
• 14 = 22
• 15 = 23
• 16 = 24
• 17 = 25
• 18 = 30
• 19 = 31
• 20 = 32

• Binary (Base 2)
• Ternary (Base 3)
• Quaternary (Base 4)
• Quinary (Base 5)
• Septenary (Base 7)
• Octal (Base 8)
• Nonary (Base 9)
• Decimal (Base 10)
• Hexadecimal (Base 16)
• Vigesimal (Base 20)