Unfortunately that just shifts the problem from one of space to one of time. (There's an algorithm for calculating the hexadecimal/binary digits of pi without c

Unfortunately that just shifts the problem from one of space to one of time. (There's an algorithm for calculating the hexadecimal/binary digits of pi without calculating previous digits, but AFAIK none for the decimal digits, so YMMV depending on which base you're doing it in. That's just a particular feature of pi, though so it doesn't matter for the general point.)