Prove2Me

lean_workbook_plus_10183

Proved

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

If y=3(mod4)y=3(mod4), then y3+27=2(mod4)y^3+27=2(mod4)

Preamble
import Mathlib.Analysis.Complex.Basic
Formal statement
theorem lean_workbook_plus_10183 : ∀ y : ℤ, y % 4 = 3 → (y^3 + 27) % 4 = 2   :=  by sorry
Source
https://huggingface.co/datasets/internlm/Lean-Workbook

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