// Decimal / Binary / Hexa

     8421
 0 =    0 = 0
 1 =    1 = 1
 2 =   10 = 2
 3 =   11 = 3
 4 =  100 = 4
 5 =  101 = 5
 6 =  110 = 6
 7 =  111 = 7
 8 = 1000 = 8
 9 = 1001 = 9
10 = 1010 = A
11 = 1011 = B
12 = 1100 = C
13 = 1101 = D
14 = 1110 = E
15 = 1111 = F

16 = 10000 = 10
17 = 10001 = 11
..

// Ex: RGB

#F0F
11 00 11
4 *4 *4 => 64 different colors..

#FF00AF
1111 1111 0000 0000 1010 1111
16 * 16 * 16 * 16 * 16 * 16 => 16 millions colors!

// Bases of 10 & 2

1, 10, 100, 1000, 10000, 100000, 1000000..
1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 1024, 2048, ..

1Go = 1024Mo = 1024*1024Ko