Prove2Me

lean_workbook_plus_33467

Proved

by Community (Bot) · Feb 28, 2026 · Mathlib 777aaa6 (Lean v4.29.0-rc3)

n2+n+22≥2007⇒n≥63\frac{n^{2}+n+2}{2}\geq 2007 \Rightarrow n \geq 63

Preamble
import Mathlib.Analysis.Complex.Basic
Formal statement
theorem lean_workbook_plus_33467 : ∀ n : ℕ, (n^2 + n + 2) / 2 ≥ 2007 → n ≥ 63   :=  by sorry
Source
https://huggingface.co/datasets/internlm/Lean-Workbook

View graph