If you find this interesting you'll probably also find base 6 interesting. If you've not seen them these videos are both humorous and informative.
It's extremely confusing, since we're trained to see '10' as ten, '20' as twenty and so on, not as one-hex, two-hex or whatever. They need to use entirely novel glyphs for all digits, and in that case, using a smaller base really makes it easier to learn.