Order 16448.
86 conjugacy classes of subgroups.
| subgroup | G/H | |
|---|---|---|
| center, socle, prime radical | C22×C257 | C2×D4 |
| commutator, Frattini, cosocle | C2×C4 | C23×C257 |
| LCS | G ▷ C2×C4 ▷ C2 ▷ C1 | |
| UCS | C1 ◁ C22×C257 ◁ C42×C257 ◁ G | |
Splittings G = N ⋊ H with N normal; H ≅ G/N.
| N | H ≅ G/N | type |
|---|---|---|
| 22. C257 | #499 | direct (N × H) |
| 23. #499 | C257 | direct (N × H) |
By isomorphism type — maximal subgroups of the same type appear once, whether or not they are normal.
| subgroup | index |
|---|---|
| #125×C257 | 2 |
| #107×C257 | 2 |
| #106×C257 | 2 |
| C4×C8×C257 | 2 |
| #499 | 257 |