Second, "Pi" is not a number. "Pi" is two letters - a number would be 3.14159(etc). I would equate this to saying "x" or "n" or "e" are numbers - they can stand for numbers, but they aren't in and of themselves numbers.
you wouldn't accept Hen Solo as an answer would you??
I want to say I really thought Dread Pirate Roberts was just the bitcoin/dark web criminal, but thinking about it I got the right answer. I'd simply forgotten where he'd got his name from.