lean_workbook_plus_25912

Proved

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

Prove that $3^{20}\equiv 1 \pmod{25}$

Preamble

import Mathlib.Analysis.Complex.Basic

Formal statement

theorem lean_workbook_plus_25912 : 3 ^ 20 ≡ 1 [ZMOD 25]   :=  by sorry

Source