31-03-2022, 07:12 PM
Regarding the entropy, yes, i didn't / don't understand it well and had not properly taken it into account - lesson learnt.
The main drive was to create numbers,
Base20 is just more common than >Base20 and with 20 chars there are only 6 chars to ignore.
Regarding the positional rigidity, i was naively ( lazily? ) hoping some would pop out when converting.
I took a 'do it and see philosophy' rather than a 'think about it first' approach.
More thinking required in future 
Thank you for your comments.
The main drive was to create numbers,
Base20 is just more common than >Base20 and with 20 chars there are only 6 chars to ignore.
Regarding the positional rigidity, i was naively ( lazily? ) hoping some would pop out when converting.
I took a 'do it and see philosophy' rather than a 'think about it first' approach.
More thinking required in future Thank you for your comments.