theorem proved term proof

`totient_sixty`

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formal statement (Lean)

1021theorem totient_sixty : totient 60 = 16 := by native_decide

Term-mode proof.

1022
1023/-- φ(72) = 24. -/

Lean names referenced from this declaration's body.

totient in IndisputableMonolith.NumberTheory.Primes.ArithmeticFunctions decl_use