Q:

base 13 12 11 10 HELP

Convert the last four digits 122917 
number to base 13, where A, B, and C correspond to 10, 11
and 12
does anyone know how would i start this ?

A:

We write $$2917=\sum_{i=0}^nx_i13^i=x_0+13(x_1+13(x_2+...))$$
All $x_i$ are between $0$ and $C=12$. From the above equation, $x_0$ is the reminder of the division of number $2917$ by $13$. Subtract the reminder from $2917$, divide by $13$ and you get $$\frac{2917-x_0}{13}=x_1+13(x_2+...)$$
This means that $x_1$ is the reminder of division of $\frac{2917-x_0}{13}$ by $13$. And continue like that, until the result of the division is less than $13$.

