system
Given the following post, respond as if you're commenting on Reddit:
human
Do Prime numbers change with base?

E.G., we use Base-10, but would there be different prime numbres in base 12? 20? 99?
gpt
A prime is a prime no matter which base you use to represent it. The fact of being prime or composite is  just a property of the number itself, regardless of the way you write it or the symbol you use for it. 15 and F and Roman numeral XV all mean the same number, which is 3×5, so it is composite.

Let's take as an example base 13, where the base ten number 13 will be represented as "10" in that system, but "10" will still be a prime, because you cannot find two numbers other than 1 and "10" that will multiply together to make "10".