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Feb 29 at 17:25 comment added YCor That $|\mathrm{SL}_n(3)|$ divides $|\mathrm{SL}_n(p)|$ is rare but still true in many cases. It seems automatic for $n=2$, and for each $n$ seems true for infinitely many $p$ (I haven't checked, but it might be true inside one coprime arithmetic progression). It's more and more rare as $n$ grows. For instance for $n=7$ the smallest such $p$ is $535573$.
S Feb 29 at 3:04 vote accept user44312
S Feb 29 at 3:04 vote accept user44312
S Feb 29 at 3:04
S Feb 29 at 3:04 vote accept user44312
S Feb 29 at 3:04
Feb 29 at 3:04 vote accept user44312
S Feb 29 at 3:04
Feb 29 at 3:04 vote accept user44312
Feb 29 at 3:04
Feb 28 at 14:24 answer added Geoff Robinson timeline score: 11
Feb 28 at 13:43 answer added Dave Benson timeline score: 11
Feb 28 at 12:47 comment added user44312 Yes, I agree. It is already rare that $|\mathrm{SL}_n(3)|$ divides $|\mathrm{SL}_n(p)|$.
Feb 28 at 12:30 comment added Geoff Robinson I would agree with that assessment.
Feb 28 at 12:29 history edited YCor CC BY-SA 4.0
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Feb 28 at 12:28 comment added Dave Benson And I'll bet the answer is never, for $n>2$ and $p\ne 3$.
Feb 28 at 12:26 comment added Geoff Robinson I think this can be attacked by considering the Sylow $3$-subgroups of the respective groups.
Feb 28 at 12:17 history asked user44312 CC BY-SA 4.0