Fermat’s Last Theorem Proof: What Claude Really Proved in Lean in 11 Days
Fermat’s Last Theorem was solved decades ago. What changed in 2026 is that the proof can now be checked end to end by a computer. Anthropic says Claude worked largely autonomously for 11 days to produce the first complete machine-checked Fermat’s Last Theorem proof in Lean. The project generated about 13 million lines of Lean, … Read more