Hexadecimal

Bases greater then 10 require additional digits.

Base 16 (hexadecimal) is useful because it is easy to convert to or from binary and it is more compact that binary.

Letters A, B, C, D, E, F used to represent 10, 11, 12, 13, 14, 15 

3EA916 = 3*163 + 14*162 + 10*161 + 9*160
       = 3*4096 + 14*256 + 10*16 + 9*1
       = 12288 + 3584 + 160 + 9
       = 16041

Index