For all we know, Pi is random (i.e. normal, although we haven't been able to prove it). That would mean any sequence appears eventually, with uniform odds. Henc

For all we know, Pi is random (i.e. normal, although we haven't been able to prove it). That would mean any sequence appears eventually, with uniform odds. Hence any ("interesting") data you'd want to store does appear at some point, and I gave the odds of any (interesting or not) digit string appearing in the first x digits.