Let $G$ be simple group of order $p^{2}-1$ where $p$ is Mersenne prime.
I am looking for get a contradiction when $p\mid |Aut(G)|$. Does anyone knows how we can get a contradiction? Thanks.
Let $G$ be simple group of order $p^{2}-1$ where $p$ is Mersenne prime.
I am looking for get a contradiction when $p\mid |Aut(G)|$. Does anyone knows how we can get a contradiction? Thanks.