lean_workbook_plus_41921

Proved

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

Prove that $3^{18} \equiv 1 \mod 19$ .

Preamble

import Mathlib.Analysis.Complex.Basic

Formal statement

theorem lean_workbook_plus_41921 : 3 ^ 18 ≡ 1 [ZMOD 19]   :=  by sorry

Source