I have to solve $3^{\phi(n)}\equiv 4 \pmod{11}$, where $\phi(n)$ is Euler's function. I have no idea after this observation: $\phi(n)\equiv 4\pmod{5}$.
Thanks.
2026-03-28 02:03:11.1774663391
Idea to solve $3^{\phi(n)}\equiv 4 \pmod{11}$.
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