WARNING Do NOT calculate Pi in binary. It is conjectured that this number is normal, meaning that it contains ALL finite bit strings. If you compute it, you will be guilty of:
Also, your computer will contain all of the nastiest known computer viruses. In fact, all POSSIBLE computer viruses.
Some of the files on my PC are intensely personal, and I for one don't want you snooping through a copy of them. You might get away with computing just a few digits, but why risk it?
There's no telling how far into Pi you can go without finding the secret documents about the JFK assassination, a photograph of your neighbor [performing an unmentionable act], or a complete digital copy of all future not-yet-released Hollywood smash hits. So just don't do it.
The same warning applies to e, the square root of 2, Euler's constant, Phi, the cosine of any non-zero algebraic number, and the vast majority of all other real numbers.
There's a reason why these numbers are always computed and shown in decimal, after all.