Base-7 ... Very intriguing!
(This occurred to me too - see Post 62 - regarding Abraham and Sarah.)
Do I understand Base-7 correct:
0,1, 2, 3, 4, 5, 6, 10, 11, 12, 13, 14, 15, 16, 20, 21, etc. Right?
The numbers 7, 8, and 9 do not exist in the numbering system?
That's problematical if Abraham...