Definition:Number Base/Also see

Number Base: Also see
The most common number base is of course base $10$.

So common is it, that numbers written in base $10$ are written merely by concatenating the digits:
 * $r_m r_{m-1} \ldots r_2 r_1 r_0$

$2$ is a fundamentally important number base in computer science, as is $16$:


 * Definition:Binary Notation
 * Definition:Hexadecimal Notation