Quote:
Do you mean specifically n digits, like "what are my chances of finding specifically a 48 digit factor if I run this curve?"

something like that, yes.
to clarify, it would be very nice if there were a way to get the odds of an ndigit factor being found after an amount of curves at a certain b1 (e.g. odds of finding a p
_{35} factor after 100 curves at b1=5e6)