Order 19744.
78 conjugacy classes of subgroups.
| subgroup | G/H | |
|---|---|---|
| center, Frattini | C22 | C22×D617 |
| commutator, socle, cosocle | C22×C617 | C23 |
| Fitting, prime radical | C2×D4×C617 | C2 |
| hypercenter | C2×D4 | D617 |
| hypocenter | C617 | #123 |
| LCS | G ▷ C22×C617 ▷ C617 | |
| UCS | C1 ◁ C22 ◁ C2×D4 | |
Splittings G = N ⋊ H with N normal; H ≅ G/N.
| N | H ≅ G/N | type |
|---|---|---|
| 1. C22×Dic617 | C2 | semidirect |
| 2. #23754579 | C2 | semidirect |
| 3. C22⋊Dic617 | C2 | semidirect |
| 4. C22⋊Dic617 | C2 | semidirect |
| 25. C617 | #123 | semidirect |
By isomorphism type — maximal subgroups of the same type appear once, whether or not they are normal.
| subgroup | index |
|---|---|
| C22×Dic617 | 2 |
| #23754579 | 2 |
| C22⋊Dic617 | 2 |
| C2×D4×C617 | 2 |
| #123 | 617 |