To save us from searching in the number space after 4.3-ish billionth slot, we could just store the sequences that we didn't find in that part of pi. I propose

To save us from searching in the number space after 4.3-ish billionth slot, we could just store the sequences that we didn't find in that part of pi. I propose a bit used to indicate whether the current sequence is a pi-sequence or just raw data.