Imperial College London FLT project

New Capabilities

As of September 2026: Ongoing human-led formalization effort, now overtaken by Claude

Fermat's Last Theorem waited 358 years for a proof. Andrew Wiles supplied one in 1995. In August 2026, Anthropic's Claude AI produced a computer-verified version of that proof in 11 days, writing 13 million lines of Lean code and proving 29,500 intermediate theorems along the way.

Updated Sep 7