Finite Group DatabasebetaFinite Group DatabasebetaOrder 128.
636 conjugacy classes of subgroups.
| # | subgroup | G/H | class size | multiplicity | normal? | properties |
|---|---|---|---|---|---|---|
| 1 | C2×#127 | C2 | 1 | 14 | yes | maximal, complemented |
| 2 | C43 | C2 | 1 | 1 | yes | maximal, characteristic, complemented |
| 3 | C22×D4 | C22 | 1 | 28 | yes | — |
| 4 | #127 | — | 2 | 56 | no | — |
| 5 | C2×C42 | C22 | 1 | 7 | yes | — |
| 6 | C24 | C23 | 1 | 8 | yes | — |
| 7 | C2×D4 | — | 2 | 168 | no | — |
| 8 | C22×C4 | C23 | 1 | 7 | yes | — |
| 9 | C42 | D4 | 1 | 28 | yes | complemented |
| 10 | C23 | — | 2 | 56 | no | — |
| 11 | C23 | C24 | 1 | 1 | yes | characteristic |
| 12 | D4 | — | 4 | 112 | no | — |
| 13 | C2×C4 | C2×D4 | 1 | 42 | yes | — |
| 14 | C22 | — | 4 | 56 | no | — |
| 15 | C22 | C22×D4 | 1 | 7 | yes | — |
| 16 | C4 | #127 | 1 | 28 | yes | complemented |
| 17 | C2 | — | 8 | 8 | no | — |
| 18 | C2 | C2×#127 | 1 | 7 | yes | — |
| subgroup | G/H | |
|---|---|---|
| center, commutator, Frattini, socle, cosocle | C23 | C24 |
| LCS | G ▷ C23 ▷ C1 | |
| UCS | C1 ◁ C23 ◁ G | |
| LECS | G ▷ C23 ▷ C1 | |
Splittings G = N ⋊ H with N normal; H ≅ G/N.
| N | H ≅ G/N | type |
|---|---|---|
| 1. C2×#127 | C2 | semidirect |
| 2. C43 | C2 | semidirect |
| 9. C42 | D4 | semidirect |
| 16. C4 | #127 | semidirect |
By isomorphism type — maximal subgroups of the same type appear once, whether or not they are normal.
| subgroup | index |
|---|---|
| C2×#127 | 2 |
| C43 | 2 |