I don't know which numbers you are referring to, but at YX (Republic) anything found on the release doesn't have to be memorized. That means you don't need to memorize the different weight limitations between 170/175/190, but you should be familiar.

The temp limits are also not memory items due to a reference in the SOP about how compliance can be through the moving color coded marks on the EICAS. Some check airman do seem to be interested in you at least knowing the ITT limit for starting an engine, only because they want you to shut the engine down before the FADEC does on an abnormal start.