Table 1. Counting Numbers in Other Number Systems

Notes

  1. If mankind had evolved with 3 fingers (and a thumb), we would have probably used an octal number system for counting, that is one based on 8 figures.
    The 8 figures used in Table 1 are: 0, 1, 2, 3, 4, 5, 6, 7.

  2. The characteristics of computer processors made the hexadecimal number system widely used: this system has 16 figures.
    Table 1 uses the commonly used figures, which are: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, F
Decimal
System		 Binary
System		 Octal
System		 Hexadecimal
System
1
1
1
1
2
10
2
2
3
11
3
3
4
100
4
4
5
101
5
5
6
110
6
6
7
111
7
7
8
1000
10
8
9
1001
11
9
10
1010
12
A
11
1011
13
B
12
1100
14
C
13
1101
15
D
14
1110
16
E
15
1111
17
F
16
10000
20
10
17
10001
21
11
18
10010
22
12
19
10011
23
13
20
10100
24
14