← Back to live feed · 1 stories across 1 day

Sunday, Sep 20, 2026

1 story
1
Anthropic Claude Factors RSA 896 to Break Public Record
topics 🤖 AI🔒 Cybersecurity tags AIAI ModelsAI ResearchTechCybersecurity keywords AntCognition

The public factoring record jumped three times in 16 days, concluding with a successful solve by Anthropic's Claude AI. The assistant identified the prime factors of the RSA-896 key using a cluster of 2,048 GPUs over a 10 day period. This milestone surpassed a previous benchmark of 862 bits and utilized established cryptanalytic techniques rather than a new mathematical breakthrough.

Cognition's Devin AI factored RSA-260 using $400,000 of B200 GPUs approximately two weeks prior to the latest solve. These recent AI-assisted factorization milestones have demonstrated a reduction in the time and compute required to crack specific RSA keys using known methods, sparking a debate on the current cost of encryption cracking.

Earlier version from Saturday, Sep 19
Anthropic Claude Cracks RSA-896 in 10 Days to Set New Factoring Record
4 tweets • 3 sources
See all 7 tweets →