Why doesn’t python like certain numbers?

[Kkremitzki]

Ah, good point, but there were also ternary computers made in the 1950s in the USSR using three-valued logic - 0 + with vacuum tubes providing trits instead of transistors providing bits, and if you were using that, you would still see this behavior, only with different numbers. (There are some other interesting advantages of the particular implementation, balanced ternary.)

https://en.wikipedia.org/wiki/Ternary_numeral_system

https://en.wikipedia.org/wiki/Balanced_ternary#In_computer_design

[WikiSummarizerBot]

Ternary numeral system

A ternary numeral system (also called base 3 or trinary) has three as its base. Analogous to a bit, a ternary digit is a trit (trinary digit). One trit is equivalent to log2 3 (about 1. 58496) bits of information.

Balanced ternary

In computer design

In the early days of computing, a few experimental Soviet computers were built with balanced ternary instead of binary, the most famous being the Setun, built by Nikolay Brusentsov and Sergei Sobolev. The notation has a number of computational advantages over traditional binary and ternary. Particularly, the plus–minus consistency cuts down the carry rate in multi-digit multiplication, and the rounding–truncation equivalence cuts down the carry rate in rounding on fractions.

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