Well with my number you can at least calculate the digits at any position without needing to calculate all the digits before. Let's do it for a similar number

Well with my number you can at least calculate the digits at any position without needing to calculate all the digits before. Let's do it for a similar number but in binary format… a 1mb file has 2²⁰ digits. If we optimize the indexing to point to the "number" instead of the "digit"… so that the index is smaller. Magically the index is as long as the file!