Trac #34901: random doctest failure in src/doc/en/thematic_tutorials/…

…group_theory.rst

Part of #32544:

{{{
sage -t --long --random-seed=185470747385175316039405094141387664605
src/doc/en/thematic_tutorials/group_theory.rst
**********************************************************************
File "src/doc/en/thematic_tutorials/group_theory.rst", line 207, in
doc.en.thematic_tutorials.group_theory
Failed example:
    euler_phi(m*n) == euler_phi(m) * euler_phi(n)
Expected:
    True
Got:
    False
**********************************************************************
1 item had failures:
   1 of 170 in doc.en.thematic_tutorials.group_theory
    [127 tests, 1 failure, 4.40 s]
}}}

(From a patchbot run in #34880.)

URL: https://trac.sagemath.org/34901
Reported by: lorenz
Ticket author(s): Frédéric Chapoton
Reviewer(s): Lorenz Panny

src/doc/en/thematic_tutorials/group_theory.rst

@@ -204,7 +204,7 @@ Experiment by running the following code several times::
 
     sage: m = random_prime(10000)
     sage: n = random_prime(10000)
-    sage: euler_phi(m*n) == euler_phi(m) * euler_phi(n)
+    sage: euler_phi(m*n) == euler_phi(m) * euler_phi(n) or m == n
     True
 
 Feel a conjecture coming on?  Can you generalize this result?