Re: [Haskell-beginners] Critique my Code!

Thanks for the comments, Christian. Looking at the structure of the code overall, I should just be using a set for the set of factors, not a list. That's the fundamental problem there. I'm just so focused on list processing in Haskell that I didn't take the time to examine if it was appropriate here.

b) "sort $ nub" (even twice)

first sort and then removing duplicates can be more efficient, I would suggest: "Data.Set.toList . Data.Set.fromList"