Order 21152.
164 conjugacy classes of subgroups.
| subgroup | G/H | |
|---|---|---|
| center | C4 | C22×D661 |
| commutator, socle, cosocle | C2×C661 | C24 |
| Frattini | C2 | C23×D661 |
| Fitting | #41×C661 | C2 |
| hypercenter | #41 | D661 |
| hypocenter | C661 | C2×#41 |
| LCS | G ▷ C2×C661 ▷ C661 | |
| UCS | C1 ◁ C4 ◁ #41 | |
Splittings G = N ⋊ H with N normal; H ≅ G/N.
| N | H ≅ G/N | type |
|---|---|---|
| 1. #24902373 | C2 | semidirect |
| 2. #24902372 | C2 | semidirect |
| 3. #24902371 | C2 | semidirect |
| 4. Q8×D661 | C2 | semidirect |
| 5. D4×D661 | C2 | semidirect |
| 6. C2×C4×D661 | C2 | semidirect |
| 7. #41×C661 | C2 | semidirect |
| 9. Dic1322 | C22 | semidirect |
| 10. D2644 | C22 | semidirect |
| 11. C22⋊D661 | C22 | semidirect |
| 12. C2×Dic661 | C22 | semidirect |
| 15. C4×D661 | C22 | semidirect |
| 16. C4×D661 | C22 | semidirect |
| 17. Q8×C661 | C22 | semidirect |
| 18. D4×C661 | C22 | semidirect |
| 19. C2×C4×C661 | C22 | semidirect |
| 31. D661 | #41 | direct (N × H) |
| 32. C661 | C2×#41 | semidirect |
| 37. #41 | D661 | direct (N × H) |
| 43. Q8 | C2×D661 | semidirect |
| 46. D4 | C2×D661 | semidirect |
| 52. C2×C4 | C2×D661 | semidirect |
By isomorphism type — maximal subgroups of the same type appear once, whether or not they are normal.
| subgroup | index |
|---|---|
| #24902373 | 2 |
| #24902372 | 2 |
| #24902371 | 2 |
| Q8×D661 | 2 |
| D4×D661 | 2 |
| C2×C4×D661 | 2 |
| #41×C661 | 2 |
| C2×#41 | 661 |