Cognition's Devin agents factor RSA-260, set new record; RSA-1024 cost pegged at ~$30M
StefanoGogioso · x · 2026-09-10
Cognition researcher Eric Lu drove a fleet of Devin agents to build the world's fastest GPU lattice siever and factor RSA-260, a new public record since RSA-250 in 2020, at 10x lower cost than prior state of the art.
Key points:
- Started as a proof of concept while optimizing a job scheduler for disaggregated compute.
- Hyperscalers or frontier labs could likely factor RSA-1024 for $30M per number, and less with more optimization.
- RSA-2048 remains a billion times harder and is unaffected; 1024-bit RSA was deprecated in 2013.
Also a showcase of Devin's capability as an autonomous software engineer on long-horizon engineering tasks.
Related event: Cognition Uses Devin Agent Fleet to Factor RSA-260, Setting New Record(3 posts)→
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