Why This Matters
RSA-896 refers to factoring a large RSA challenge number, a benchmark once used to test cryptographic security limits. Successfully factoring such a large number, reportedly with AI assistance from Claude, raises questions about the pace of advances in computational factoring and the potential implications for cryptographic key sizes still in use today.
Key Takeaways
- A 896-bit RSA challenge number was factored into its two prime components, p and q.
- The factoring effort reportedly involved the AI model Claude, highlighting AI's growing role in complex computational tasks.
- This achievement underscores ongoing concerns about the long-term security of RSA encryption at smaller key sizes.
Stephen A. Weis RSA-896 September 2026
RSA-896 is a RSA challenge number I factored with Claude on September 19, 2026.
RSA-896 = 4120234369866595438555313653325759481798116998443279828454556264 3387644556524842619809887042316184187926142024718886949256093177 6375033421130982397485150944909106910269861031862704114880866970 5649029036536588674337317208131041051908642547932826013912576240 33946373269391
p = 636606729769440499166579950236036751749912014371509557713570027 508971809534551913252252094954941974952859310861988904737359709 200557919 q = 647218161102195448058768698177623951380616936266986989243011933 572862870905830904361851542450154852431416136790787107595965374 752513489
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