(I haven't met a language yet that was non-compositional in its hundreds, but I'm sure one exists.)

I give you quinientos.

(My first thought was Maltese mitejn "200", but that's a fairly straightforward dual, so probably doesn't really count against compositionality, but then I remembered quinientos from, of all things, a Donald Duck comic in German I read many, many years ago, where one of the characters asked for quinientos taleros -- I only found out years later what that number word meant.)