The Digital Press

Fractran is an esoteric, Turing-complete programming language invented by John Conway that operates by multiplying an integer by fractions from a list according to specific rules. It’s known for its simplicity in definition but complexity in writing and understanding programs.

Why it matters: Fractran demonstrates how simple mathematical operations can encode universal computation, deepening the link between number theory and programming.

The big picture: Despite its obscurity, Fractran serves as a fascinating example of minimalistic language design and computational theory.

Quick takeaway: Programs can be written in assembly-style using tools like Haskell assemblers to make Fractran more approachable and programmable.

Commenters say: Enthusiasts appreciate the mathematical elegance and challenge, while some find it impractical but intellectually stimulating.