theorem
proved
term proof
totient_five_pow_two
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803theorem totient_five_pow_two : totient (5 ^ 2) = 20 := by native_decide
proof body
Term-mode proof.
804
805/-! ### More concrete arithmetic function values -/
806
807/-- Ω(6) = 2 (since 6 = 2 × 3). -/