Last year there was a post, I forget by who (sorry, I supposed I could have searched to give credit), that labeled notes up to 64ths (hemidemisemiquaver). So the next (128th) would be a semihemidemisemiquaver. I guess those are the British names. But no British name for the hundred fifty-sixth note? I looked it up and it seems Mozart used that one, so we can use the German name: zweihundertsechsundfünfzigstelnote. I don't really have a point to this post. Maybe examples of even smaller durations?