Order 21152.
166 conjugacy classes of subgroups.
| subgroup | G/H | |
|---|---|---|
| center, Frattini | C2 | C23×D661 |
| commutator, socle, cosocle | C2×C661 | C24 |
| Fitting | C2×D4×C661 | C2 |
| hypercenter | C2×D4 | D661 |
| hypocenter | C661 | H(5,𝔽2) |
| LCS | G ▷ C2×C661 ▷ C661 | |
| UCS | C1 ◁ C2 ◁ C2×D4 | |
Splittings G = N ⋊ H with N normal; H ≅ G/N.
| N | H ≅ G/N | type |
|---|---|---|
| 1. #24902372 | C2 | semidirect |
| 2. #24902371 | C2 | semidirect |
| 3. C2×C22⋊D661 | C2 | semidirect |
| 4. D4×D661 | C2 | semidirect |
| 5. C2×D4×C661 | C2 | semidirect |
| 6. C22×D661 | C22 | semidirect |
| 7. Dic1322 | C22 | semidirect |
| 8. D2644 | C22 | semidirect |
| 9. C22⋊D661 | C22 | semidirect |
| 10. C22⋊D661 | C22 | semidirect |
| 11. C2×Dic661 | C22 | semidirect |
| 12. C4×D661 | C22 | semidirect |
| 13. C23×C661 | C22 | semidirect |
| 14. D4×C661 | C22 | semidirect |
| 15. C2×C4×C661 | C22 | semidirect |
| 27. C661 | H(5,𝔽2) | semidirect |
| 33. C2×D4 | D661 | semidirect |
| 35. C23 | C2×D661 | semidirect |
| 40. D4 | C2×D661 | semidirect |
| 43. C2×C4 | C2×D661 | semidirect |
By isomorphism type — maximal subgroups of the same type appear once, whether or not they are normal.
| subgroup | index |
|---|---|
| #24902372 | 2 |
| #24902371 | 2 |
| C2×C22⋊D661 | 2 |
| D4×D661 | 2 |
| C2×D4×C661 | 2 |
| H(5,𝔽2) | 661 |