Can any Number be a Base?

There are many different ways to express numbers. The most popular is definitely the decimal system, or in other words base 10. Base 2 and base 16 are also used in computers. But did you know that we can make number bases not only from integers?

Chapters:
00:00 Introduction
02:22 Base 1
03:12 Negative bases
04:34 Fractional bases
10:06 Irrational bases
15:10 Imaginary bases