I honestly have never run into problems involving such large numbers or at least numbers of digits, but FWIW, I really like SpeedCrunch when I need a calculator

I honestly have never run into problems involving such large numbers or at least numbers of digits, but FWIW, I really like SpeedCrunch when I need a calculator, if only because it maintains a history of inputs and results across sessions. Still, if that used to work on older versions of calc.exe, and then they went and broke it, that is just plain stupid.