Any prng with a fixed (finite) amount of state will eventually return to a state it has already been in, if run long enough. Determinism then dictates that it w

Any prng with a fixed (finite) amount of state will eventually return to a state it has already been in, if run long enough. Determinism then dictates that it will begin repeating outputs. It's odd as a requirement, but it's a natural property of a prng.