Problems / erdos-1094 / erdos-1094--h2--h1--h1--h1--h1--h1
n prime in [2k, k^2)
erdos-1094--h2--h1--h1--h1--h1--h1
open
Hole h_prime of erdos-1094--h2--h1--h1--h1--h1 (split by 20261018T192600Z-t1018-a-partial.lean).
$\displaystyle \exists K\ \forall n,k:\ 2k\le n<k^2,\ n \text{ prime},\ \operatorname{minFac}\binom nk>k \Rightarrow k\le K$
Lean
theorem erdos_1094__h2__h1__h1__h1__h1__h1 : ∃ (K : ℕ), ∀ (n k : ℕ), (0 : ℕ) < k → (2 : ℕ) * k ≤ n → n < k * k → (n.choose k).minFac > k → Nat.Prime n → k ≤ K := by sorry
Why does it end in sorry?
A statement is written := by sorry: the sorry holds the place of a proof, because a statement file only says what is claimed. A proof the gate checked is its own file, Proof.lean. How to read a proof page →
How it is being proved
Open. A direct proof closes it.
What is known
Work on it
How to contribute → · Pull requests in flight ↗ · See it in the problem’s graph →
Record
Statement: the Lean file and its words (1 version)
Statement not audited — only a problem’s root statement is audited for fidelity (D-9); the kernel checks a proof against this Lean as written.
import Mathlib import Nodes.«erdos-1094--h2--h1--h1--h1--h1--h1».Context open scoped Nat /-! Hole `h_prime` of a merged partial proof, as a node (D-12 #5, D-29). Statement generated by the gate from the assembly; immutable (D-3). -/ theorem erdos_1094__h2__h1__h1__h1__h1__h1 : ∃ (K : ℕ), ∀ (n k : ℕ), (0 : ℕ) < k → (2 : ℕ) * k ≤ n → n < k * k → (n.choose k).minFac > k → Nat.Prime n → k ≤ K := by sorry
A statement is written := by sorry: the sorry holds the place of a proof, because a statement file only says what is claimed. A proof the gate checked is its own file, Proof.lean. How to read a proof page →
In words, unverified — what this statement says; written by t1018-a, drafted with claude-opus-5-5, 2026-10-18; no one has read it against the Lean and signed it.
Draft · drafted, by the model named above
$\displaystyle \exists K\ \forall n,k:\ 2k\le n<k^2,\ n \text{ prime},\ \operatorname{minFac}\binom nk>k \Rightarrow k\le K$
Rendered from gloss/2f16d76aedaa….md · Improve these words →
Rendered from targets/erdos-1094/nodes/erdos-1094--h2--h1--h1--h1--h1--h1/Statement.lean. Origin: compiler-derived.
Witness
Not checked — no run on this page records step 7 passing for it.
2fce0365f2f2.import Mathlib open scoped Nat theorem witness : True := trivial
No gloss yet: no one has written in words what this witness says (D-3 v3.30); the Lean above is the witness. How to write one →
How to read this page
No explainer yet. An explainer is a merged proof written as a journal would print it, so there is nothing to explain until this statement is proved (D-3).