Order 16448.
150 conjugacy classes of subgroups.
| subgroup | G/H | |
|---|---|---|
| center | C4×C257 | C22⋊C4 |
| commutator | C22 | C22×C4×C257 |
| Frattini, cosocle | C2×C4 | C23×C257 |
| socle | C2×C257 | C2×C22⋊C4 |
| prime radical | C2×#41×C257 | C2 |
| LCS | G ▷ C22 ▷ C2 ▷ C1 | |
| UCS | C1 ◁ C4×C257 ◁ C22×C4×C257 ◁ G | |
Splittings G = N ⋊ H with N normal; H ≅ G/N.
| N | H ≅ G/N | type |
|---|---|---|
| 2. C2×M16×C257 | C2 | semidirect |
| 3. #101×C257 | C2 | semidirect |
| 4. #100×C257 | C2 | semidirect |
| 41. C257 | #413 | direct (N × H) |
| 42. #413 | C257 | direct (N × H) |
| 44. C2×M16 | C2×C257 | semidirect |
| 45. #101 | C2×C257 | semidirect |
| 46. #100 | C2×C257 | semidirect |
By isomorphism type — maximal subgroups of the same type appear once, whether or not they are normal.
| subgroup | index |
|---|---|
| C2×#41×C257 | 2 |
| C2×M16×C257 | 2 |
| #101×C257 | 2 |
| #100×C257 | 2 |
| #413 | 257 |