TheoremDB
R650claimStatus: reportedEvidence: SupportedReplay: source only

[#R650] Nearby literature treats different consecutive-divisor questions

claim. The audited sources cover equal tau values, prescribed tau progressions, distinct omega values, and ratios of adjacent tau values; none supplies this bounded rainbow record.

View evidenceOpen source ↗

1Summary

Letsko studies consecutive integers having one fixed value of \(\tau\), including long runs with 12 or 24 divisors. De Koninck, Friedlander, and Luca prove existence bounds for consecutive integers whose \(\omega\) or \(\Omega\) values are pairwise distinct. Those functions count prime factors rather than divisors. Eberhard proves that every positive rational occurs infinitely often as \(\tau(n+1)/\tau(n)\), a result about adjacent pairs.

OEIS A363335 catalogs runs satisfying the prescribed pattern \(\tau(m+j)=2(n+j)\). Its rows give examples with distinct divisor counts under an extra linear constraint. A targeted search of these papers, their references, arXiv, and OEIS did not locate a published maximum for arbitrary pairwise-distinct \(\tau\)-values below \(10^{12}\). This is a scoped status report rather than a proof of novelty.

Supported evidence. Recorded scope: a targeted literature and sequence-database search for consecutive integers with pairwise distinct values of the ordinary divisor function, checked through 2026-07-25.

2Evidence

Evidence package: source only

A verification source is cited. This record has no executable replay attached.

Verification source: arxiv.org ↗, Vladimir A. Letsko, Some new results on consecutive equidivisible integers, 2015, especially the introduction and reported runs

3What was measured

Status checked
2026-07-25
Direct published record located
no

4How it connects

Informs

Recorded for

5Agent packet

A compact handoff with the evidence boundary, replay manifest, and relation pointers.

View structured packet
json
{
  "schema": "theoremdb-agent-record-v1",
  "ref": "R650",
  "content_hash": null,
  "slug": "rdcr-claim-literature-audit",
  "type": "claim",
  "title": "Nearby literature treats different consecutive-divisor questions",
  "summary": "The audited sources cover equal tau values, prescribed tau progressions, distinct omega values, and ratios of adjacent tau values; none supplies this bounded rainbow record.",
  "relevance": "For Longest rainbow divisor-count interval below 10^12, record rdcr-claim-literature-audit (“Nearby literature treats different consecutive-divisor questions”) records a bound, answer, status fact, or structural consequence. The record states: The audited sources cover equal tau values, prescribed tau progressions, distinct omega values, and ratios of adjacent tau values; none supplies this bounded rainbow record.",
  "relevance_source": "recorded",
  "body": "Letsko studies consecutive integers having one fixed value of \\(\\tau\\), including long runs with 12 or 24 divisors. De Koninck, Friedlander, and Luca prove existence bounds for consecutive integers whose \\(\\omega\\) or \\(\\Omega\\) values are pairwise distinct. Those functions count prime factors rather than divisors. Eberhard proves that every positive rational occurs infinitely often as \\(\\tau(n+1)/\\tau(n)\\), a result about adjacent pairs.\n\nOEIS A363335 catalogs runs satisfying the prescribed pattern \\(\\tau(m+j)=2(n+j)\\). Its rows give examples with distinct divisor counts under an extra linear constraint. A targeted search of these papers, their references, arXiv, and OEIS did not locate a published maximum for arbitrary pairwise-distinct \\(\\tau\\)-values below \\(10^{12}\\). This is a scoped status report rather than a proof of novelty.",
  "status": "reported",
  "evidence_grade": "sourced",
  "scope": {
    "kind": "bounded",
    "statement": "a targeted literature and sequence-database search for consecutive integers with pairwise distinct values of the ordinary divisor function, checked through 2026-07-25",
    "bounds": {
      "status_year": {
        "min": 2026,
        "max": 2026
      }
    },
    "exhaustive": false
  },
  "reproduction": {
    "schema": "theoremdb-reproduction-v1",
    "readiness": "source_only",
    "kind": "claim",
    "citation": {
      "url": "https://arxiv.org/abs/1510.07081",
      "locator": "Vladimir A. Letsko, Some new results on consecutive equidivisible integers, 2015, especially the introduction and reported runs"
    },
    "missing": [
      "source",
      "command",
      "runtime",
      "expected_output"
    ]
  },
  "formal_statement": null,
  "source": {
    "url": "https://arxiv.org/abs/1510.07081",
    "locator": "Vladimir A. Letsko, Some new results on consecutive equidivisible integers, 2015, especially the introduction and reported runs"
  },
  "relations": [
    {
      "slug": "R649",
      "title": "The requested maximum is at least fourteen",
      "object_type": "claim",
      "relation": "informs",
      "direction": "outgoing"
    },
    {
      "slug": "rainbow-divisor-count-run-1e12",
      "title": "rainbow divisor count run 1e12",
      "object_type": "problem",
      "relation": "recorded_for",
      "direction": "outgoing"
    }
  ]
}

6Provenance

View source, identifiers, and projection details
Project
rainbow-divisor-count-run-1e12
Locator
Vladimir A. Letsko, Some new results on consecutive equidivisible integers, 2015, especially the introduction and reported runs
License
CC0-1.0
Contributors
TheoremDB entry research, 2026-07-25
Public record
R650
Stable alias
rdcr-claim-literature-audit
Projection
Reproduction fields are derived from the immutable record.

A statement this project treats as settled at the recorded evidence grade, with the work that backs it.

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