From aef375f56ec93740f0a9b5031c3d2063c553fc12 Mon Sep 17 00:00:00 2001
From: Raymond Hettinger <rhettinger@users.noreply.github.com>
Date: Mon, 8 Jan 2024 13:16:22 -0600
Subject: Minor algebraic simplification for the totient() recipe (gh-113822)

---
 Doc/library/itertools.rst | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Doc/library/itertools.rst b/Doc/library/itertools.rst
index 5c8cc98..338a5f9 100644
--- a/Doc/library/itertools.rst
+++ b/Doc/library/itertools.rst
@@ -1150,7 +1150,7 @@ The following recipes have a more mathematical flavor:
        # https://mathworld.wolfram.com/TotientFunction.html
        # totient(12) --> 4 because len([1, 5, 7, 11]) == 4
        for p in unique_justseen(factor(n)):
-           n = n // p * (p - 1)
+           n -= n // p
        return n
 
 
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