My largest number was 205.

I was sneaking in the cave and shoved the spider queen down from the pillar into the underdark.
It was not intended, but it fell into a hole at the bottom of the cave.
This gave 20EXP and if it has loot I will never know. (unless I kill it in a different way in another playthrough).

One of the holes you can slow fall into

The highest hit for me (without pushing) was 72. I almost 1 shotted one of the minotaurs.

We Demand More Sexy damage number. I wonder when my evocation wizard up level 12, how much damage can he do?