software development is like 90% weird compromises to work around the limitations of the tools you use. for example: hardcoded list of prime numbers. it's faster than computing them on the fly.
FAQ
Q. what are you using these for
A. artist alley. don't worry about it.
Q. what if you need to change these
A. if we somehow find new prime numbers between approximately 1k and 10k then updating this file will be the least of our concerns
see also: "random number generators" in NES/Gameboy and even later-gen games often just being "list of a couple hundred random numbers that we're gonna cycle through"
