Prove2Me

lean_workbook_plus_68307

Proved

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

Prove via induction that 6∣7n−16 \mid 7^n - 1 for all n∈Z+n \in \mathbb{Z}^+

Preamble
import Mathlib.Analysis.Complex.Basic
Formal statement
theorem lean_workbook_plus_68307 (n : ℕ) : 6 ∣ 7^n - 1   :=  by sorry
Source
https://huggingface.co/datasets/internlm/Lean-Workbook

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