Finger binary:
https://en.wikipedia.org/wiki/Finger_binary :
> Finger binary is a system for counting and displaying binary numbers on the fingers of either or both hands. Each finger represents one binary digit or bit. This allows counting from zero to 31 using the fingers of one hand, or 1023 using both: that is, up to 2**5−1 or 2**10−1 respectively.
- "How to count to 1000 on two hands" by 3blue1brown https://youtu.be/1SMmc9gQmHQ
- "Polynesian People Used Binary Numbers 600 Years Ago - Scientific American" https://www.scientificamerican.com/article/polynesian-people...
What is the comparative value of radixes like Binary, Octal, andHexadecimal compared to Decimal (radix 10)?
Perhaps a radix like eπI would be more useful; though some amost-mystic physicists do tend to radix 9: "nonary" (which is actually ~ also radix-3).
List of numeral systems >
By culture / time period, By type of notation
https://en.wikipedia.org/wiki/List_of_numeral_systems :
> Numeral systems are classified here as to whether they use positional notation (also known as place-value notation), and further categorized by radix or base.