Finite Group DatabasebetaFinite Group DatabasebetaOrder 31712.
108 conjugacy classes of subgroups.
| # | subgroup | G/H | class size | multiplicity | normal? | properties |
|---|---|---|---|---|---|---|
| 1 | C2×D4×C991 | C2 | 1 | 6 | yes | maximal, complemented |
| 2 | C42×C991 | C2 | 1 | 1 | yes | maximal, characteristic, complemented |
| 3 | C23×C991 | C22 | 1 | 4 | yes | — |
| 4 | D4×C991 | — | 2 | 12 | no | — |
| 5 | C2×C4×C991 | C22 | 1 | 3 | yes | — |
| 6 | C22×C991 | — | 2 | 12 | no | — |
| 7 | C22×C991 | C23 | 1 | 1 | yes | characteristic |
| 8 | C4×C991 | D4 | 1 | 6 | yes | complemented |
| 9 | C2×C991 | — | 4 | 4 | no | — |
| 10 | C2×C991 | C2×D4 | 1 | 3 | yes | — |
| 11 | C991 | #127 | 1 | 1 | yes | characteristic, direct product factor, Sylow |
| 12 | #127 | C991 | 1 | 1 | yes | maximal, characteristic, direct product factor, Sylow |
| 13 | C2×D4 | C2×C991 | 1 | 6 | yes | complemented |
| 14 | C42 | C2×C991 | 1 | 1 | yes | characteristic, complemented |
| 15 | C23 | C22×C991 | 1 | 4 | yes | — |
| 16 | D4 | — | 2 | 12 | no | — |
| 17 | C2×C4 | C22×C991 | 1 | 3 | yes | — |
| 18 | C22 | — | 2 | 12 | no | — |
| 19 | C22 | C23×C991 | 1 | 1 | yes | characteristic |
| 20 | C4 | D4×C991 | 1 | 6 | yes | complemented |
| 21 | C2 | — | 4 | 4 | no | — |
| 22 | C2 | C2×D4×C991 | 1 | 3 | yes | — |
| subgroup | G/H | |
|---|---|---|
| center, socle | C22×C991 | C23 |
| commutator, Frattini, cosocle | C22 | C23×C991 |
| LCS | G ▷ C22 ▷ C1 | |
| UCS | C1 ◁ C22×C991 ◁ G | |
Splittings G = N ⋊ H with N normal; H ≅ G/N.
| N | H ≅ G/N | type |
|---|---|---|
| 1. C2×D4×C991 | C2 | semidirect |
| 2. C42×C991 | C2 | semidirect |
| 8. C4×C991 | D4 | semidirect |
| 11. C991 | #127 | direct (N × H) |
| 12. #127 | C991 | direct (N × H) |
| 13. C2×D4 | C2×C991 | semidirect |
| 14. C42 | C2×C991 | semidirect |
| 20. C4 | D4×C991 | semidirect |
By isomorphism type — maximal subgroups of the same type appear once, whether or not they are normal.
| subgroup | index |
|---|---|
| C2×D4×C991 | 2 |
| C42×C991 | 2 |
| #127 | 991 |