RSA-896
Stephen A. Weis announced the successful factorization of the RSA-896 challenge number on September 19, 2026. The task was completed in collaboration with the AI model Claude. The article provides the specific prime factors p and q that multiply to form the original number.
- ▪Stephen A. Weis factored the RSA-896 challenge number on September 19, 2026.
- ▪The factorization was achieved using the assistance of the AI model Claude.
- ▪The first prime factor, p, is a 153-digit number starting with 636606729769440499166579950236036751749912014371509557713570027.
- ▪The second prime factor, q, is a 153-digit number starting with 647218161102195448058768698177623951380616936266986989243011933.
Hacker News (Front Page) files mainly under programming. We currently carry 1,873 of its stories. Top-voted stories on Hacker News.
Story provenance
Source · retrieval · rights · ranking — open for full record
inspect →
Story provenance
Attribution is not the same as permission. This drawer separates discovery metadata, excerpts, WeSearch-generated summaries, reuse status, and whether the publisher receives the visit. Nothing here claims a legal grant the publisher has not made.
Record
| Original publisher | Saweis |
| Canonical URL | https://saweis.net/posts/rsa-896.html |
| Publication time | Sun, 20 Sep 2026 02:19:33 +0000 |
| Retrieval time | 2026-09-20T02:58:46.678Z |
| Last seen | 2026-09-20T02:58:46.678Z |
| Headline source | Publisher (no WeSearch rewrite) |
| Excerpt source | publisher body |
| Excerpt method | First ~120 words (~800 chars) of extracted publisher body, fair-use limited. |
| Summary | WeSearch · cerebras-chat (WeSearch summarizer) |
| Summary source text | contentText |
| Citation coverage | Summary is a WeSearch-generated derivative; primary citation is the original publisher URL. |
| Cluster | None |
| Cluster logic | Not yet clustered, or no peer story found in the clustering window. |
| Ranking reason | Story pages are not engagement-ranked. Hub feeds use recency, with optional source-diversified chronological ordering (cap consecutive stories per source). No personalized ranking. |
| Publisher visit | Yes — open original |
| Substitutes article? | No — link-out required for full text |
Rights status (four layers)
WeSearch handling by dimension
| Indexing | May the item be indexed (stored, ranked, made findable)? | Allowed |
| Snippet | May a short excerpt of the publisher's text be shown? | Allowed |
| AI summary | May WeSearch generate its own short summary of the article? | Limited |
| Retrieval / RAG | May the content be exposed for third-party retrieval-augmented generation? | Not asserted |
| Model training | May the content be used to train AI models? | Not asserted |
| Commercial reuse | May the content be reused commercially? | Not permitted |
Basis: Derived from the published RSS/Atom feed. Contact: [email protected]. Reviewed: 2026-07-24.
Opening excerpt (first ~120 words) tap to expand
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
Excerpt limited to ~120 words for fair-use compliance. The full article is at Saweis.
Discussion
0 commentsMore from Saweis
