Prime numbers can also be used to generate convincing pseudo-random numbers and patterns that don't repeat for long times. You can basically use them whenever

Prime numbers can also be used to generate convincing pseudo-random numbers and patterns that don't repeat for long times. You can basically use them whenever you need a number that has as few relations to other numbers as possible. Anyway, as math is the language we use to model the universe around us, any mathematical property is likely to be a property of the universe in some way too (if maths is a proper model).