Order 31712.
164 conjugacy classes of subgroups.
| subgroup | G/H | |
|---|---|---|
| center | C4 | C22×D991 |
| commutator, socle, cosocle | C2×C991 | C24 |
| Frattini | C2 | C23×D991 |
| Fitting | #41×C991 | C2 |
| hypercenter | #41 | D991 |
| hypocenter | C991 | C2×#41 |
| LCS | G ▷ C2×C991 ▷ C991 | |
| UCS | C1 ◁ C4 ◁ #41 | |
Splittings G = N ⋊ H with N normal; H ≅ G/N.
| N | H ≅ G/N | type |
|---|---|---|
| 1. #30629393 | C2 | semidirect |
| 2. #30629392 | C2 | semidirect |
| 3. #30629391 | C2 | semidirect |
| 4. Q8×D991 | C2 | semidirect |
| 5. D4×D991 | C2 | semidirect |
| 6. C2×C4×D991 | C2 | semidirect |
| 7. #41×C991 | C2 | semidirect |
| 9. Dic1982 | C22 | semidirect |
| 10. D3964 | C22 | semidirect |
| 11. C22⋊D991 | C22 | semidirect |
| 12. C2×Dic991 | C22 | semidirect |
| 15. C4×D991 | C22 | semidirect |
| 16. C4×D991 | C22 | semidirect |
| 17. Q8×C991 | C22 | semidirect |
| 18. D4×C991 | C22 | semidirect |
| 19. C2×C4×C991 | C22 | semidirect |
| 31. D991 | #41 | direct (N × H) |
| 32. C991 | C2×#41 | semidirect |
| 37. #41 | D991 | direct (N × H) |
| 43. Q8 | C2×D991 | semidirect |
| 46. D4 | C2×D991 | semidirect |
| 52. C2×C4 | C2×D991 | semidirect |
By isomorphism type — maximal subgroups of the same type appear once, whether or not they are normal.
| subgroup | index |
|---|---|
| #30629393 | 2 |
| #30629392 | 2 |
| #30629391 | 2 |
| Q8×D991 | 2 |
| D4×D991 | 2 |
| C2×C4×D991 | 2 |
| #41×C991 | 2 |
| C2×#41 | 991 |