Do you know binary code?

Like how one is "0" and 5 is "100"?

Also, Binary code can stand for letters, but we're not concerned with that right now.

So, if any of you know binary, lets see how high we can get!! Post at least one number, and no more then 20.

I'll start us off;

0 - 1
1 - 2
10 - 3
11 - 4
100 - 5
101 - 6

P.S. leave the number next to the binary number!