lean_workbook_plus_28101

Proved

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

Prove that $5^{99}\equiv 0 \mod 25$ .

Preamble

import Mathlib.Analysis.Complex.Basic

Formal statement

theorem lean_workbook_plus_28101 : 5 ^ 99 ≡ 0 [ZMOD 25]   :=  by sorry

Source