Factoring · primes · the wall

rsacrack.

Notes from the edge of an unsolved problem — the geometry of factoring, and why the difficulty might be built into the numbers themselves.

Jonathan Kendall · number theory, by intuition first

RSA encryption rests on a single asymmetry: multiplying two large primes is easy, and recovering them from the product is hard. That gap is the whole edifice — and no one has proved it is permanent. This is a working notebook on why the gap is there, approached not through cryptography but through shape: marbles on a number line, semiprime triangles, a logarithmic spiral, and a custom unit of turning.

The throughline is a claim that keeps recovering itself from different angles — that factoring resists us because a number's magnitude and its factors are two readings that never reduce to one. The work below circles that claim, building it up from physical pictures before reaching for abstraction, and prefers an honest null result over an overclaim.

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