AnthropicAnalysisScienceAugust 14, 2026

Anthropic's unreleased Claude improves Riemann hypothesis bound

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An unreleased research version of Claude increased the proven lower bound for the fraction of Riemann zeta zeros satisfying the hypothesis from 41.6% to 67.2%. It tested 650 ideas across 60 sub-agents, with results validated by Anthropic mathematicians and formalized in Lean.

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