GPT 6 Astra reports prime gaps at most 186

GPT 6 Astra’s manuscript claims lim inf of consecutive prime gaps is at most 186, by proving DHL[40,2] and applying it to an explicit admissible 40-tuple of diameter 186.

Sources for this record

What was already known

Polymath 8b proved the long-standing published bound H1 ≤ 246. Stadlmann independently and concurrently proved H1 ≤ 240. OpenAI’s manuscript combines Polymath 8a and Stadlmann equidistribution estimates with new support conditions and numerical optimization to claim DHL[40,2], yielding 186 (manuscript §1.1, pp. 1–2).

AI involvement AI-led

The primary manuscript names OpenAI as author and says the proof is due to GPT 6 Astra. The repository formalization metadata also names OpenAI as author; the exact amount of human input during theorem discovery is not specified.

OpenAI is named as author and the abstract explicitly credits GPT 6 Astra with the proof. The exact amount of human direction beyond problem selection is not documented.

Importance Notable

If correct, 186 is a further numerical improvement to the bounded-prime-gap upper bound, while the twin-prime conjecture H1=2 remains open.

Limitations

The Lean code proves the deduction from three explicit inputs, not the unconditional bound: two Kloosterman estimates are cited from established literature, and 104 outer, 45 inner and three cap numerical inequalities rely on a Python/FLINT certificate. The reported certificate was not rerun here, and no complete outside check of the 39-page manuscript was found.

Technical verification Partial

The source reports a Lean kernel check of DHL[40,2] and H1≤186 conditional on three explicit analytic/numerical inputs. Two Kloosterman estimates come from cited literature; the finite integral and cap inequalities rely on a Python/FLINT certificate not discharged in Lean or rerun here. No completed full manuscript review was located.

Formal checking

Source-reported Lean 4 kernel/Comparator check covers the implication from three explicit external assumptions to DHL[40,2] and H1≤186. It does not check the assumptions themselves.

Checker
OpenAI-reported Lean 4 kernel and Comparator
Scope
Conditional deduction of DHL[40,2] and H1≤186 from two Kloosterman estimates and the finite numerical-integral/cap package.
Basis
Reported by the linked checker
Evidence source

Checking a formal statement does not establish that it matches the original problem.

Human understanding Few

Few is the default when evidence for a higher level is insufficient. The manuscript provides an outline, but no named human is documented as independently explaining the new complementary factorization and sieve-weight argument.

Correction and publication history

2026-10-18 · publication

Claim, AI attribution, prior bounds, and conditional checking scope reviewed from primary sources for non-notifying local inclusion.

Read this published revision