lean_workbook_plus_44499

Proved

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

What is the last digit of $2^{99}$ ?

Preamble

import Mathlib.Analysis.Complex.Basic

Formal statement

theorem lean_workbook_plus_44499 : 2 ^ 99 ≡ 8 [MOD 10]   :=  by sorry

Source