Quinary

The quinary number system (also known as base-5 or pental) is a number system that use 5 digits (0, 1, 2, 3 and 4). Quinary is related to the decimal system. Examples are 17 in quinary is 32 and 64 in quinary is 224. When you reach 4, it will not be 5 because 5 is not in the quinary system, so it will add a 1 at the front and everything else except for the 1 at the front (first digit) to 0, instead of 5 at the back. Quinary is almost half of decimal (1 to 25 only, if they end with 0 or 5 (in decimal)) because 15 in quinary is 30 or 20 in quinary is 40.

Quinary numbers from 1 to 20
Decimal is on the left and quinary is on the right.
0 = 0
1 = 1
2 = 2
3 = 3
4 = 4
5 = 10
6 = 11
7 = 12
8 = 13
9 = 14
10 = 20
11 = 21
12 = 22
13 = 23
14 = 24
15 = 30
16 = 31
17 = 32
18 = 33
19 = 34
20 = 40

Related pages
Binary (Base 2)
Ternary (Base 3)
Quaternary (Base 4)
Senary (Base 6)
Septenary (Base 7)
Octal (Base 8)
Nonary (Base 9)
Decimal (Base 10)
Hexadecimal (Base 16)
Vigesimal (Base 20)

References

Category:Numbering systems