Corroboration · RSA records, claims graded since 2026

The Factoring Claims Register

Successor to the RSA Factoring Challenge (1991-2007)

The normalized claim census

77 claims. None broke RSA.

Seventy-seven factoring and RSA-break claims, graded by the evidence for the claim, not by who made it. At the advertised level of a general cryptographic-size RSA break, 0 are substantiated and 0 actually broke RSA.

What this is

The register keeps the 54-number RSA catalogue beside all 77 normalized claim records. Historical entries say only what the locked local record says. Live entries keep C1 instance evidence separate from C2 general speed, C3 classical complexity, and C4 quantum-resource claims.

One-multiplication self-adjudication applies to instance claims only and never promotes a generality verdict.

The watcher heartbeat

Four local watchers are configured. A quiet watcher is shown as quiet; a failed check is never shown as success.

Four watchers configured; no factoring-corpus check is recorded yet. Each is shown as quiet, not successful.

  • arxiv_factoring_claims quiet
  • eprint_factoring quiet
  • rsa_records quiet
  • nist_pqc_forum quiet

The honest catalogue

Claims graded

77

0 substantiated · 0 actually broke RSA. Every claim opens its own dossier.

2019–2025 estimate change

22×

20,000,000 → 897,864 modelled physical qubits. Runtime grew; these are estimates, not factorisations.

Largest real gate-model Shor factorisation

21

A compiled small-instance result, not a scalable or RSA-size demonstration.

RSA numbers catalogued

54

23 factored · 31 open. Every number has a dossier.

12 refuted · 18 unsubstantiated · 11 estimate-not-demonstration · 24 special-structure-only · 11 open · 1 withdrawn.

All counts as of .

The current frontier

RSA-250 is the largest general-purpose factorization in the locked catalogue: 250 decimal digits, 829 bits, recorded on 28 February 2020. That is a record for one number, not a verdict that general RSA factoring is easy.

See the exact frontier tables and charts.

Latest changes

Seed records stay in the locked JSONL files. Later factoring-corpus events appear from the append-only journal.

No factoring-corpus journal events are recorded in the local append-only journal.

Test yours first

Before filing a factoring or RSA-break claim, run the four class-aware checks. They ask for the factor witness, complete resource accounting, a fresh target, and an honest statement of quantum actuality.

Test your factoring claim first.