1.) using this data: z69JZqlJn862D1ndx7oLVEMmV0lP1zewEeUCrsI7Roahzpeny7P
2.) covert to digits using my tool:
6169193552471949862131493959750213114224831047251614058144030125354187275036436 151404960725
It looks like you've used some other rules of conversion. For instance, starting from the beginning, how did you convert 'z' to '61'?
because in upper case and lower case...
should i convert all lower case to upper case and convert all the same?