The man paid to prove Fermat by hand says Claude did it in 11 days

Anthropic's AI agents formalized Fermat's Last Theorem in 11 days by generating 13 million lines of Lean code and proving over 30,000 theorems, surpassing a five-year human project funded with £1m. Kevin Buzzard verified the proof but noted it adds no new mathematics, though it signals a shift toward rapid AI-driven formalization of complex proofs.