Finite Group DatabasebetaFinite Group DatabasebetaOrder 128.
56 conjugacy classes of subgroups.
| # | subgroup | G/H | class size | multiplicity | normal? | properties |
|---|---|---|---|---|---|---|
| 1 | #508 | C2 | 1 | 1 | yes | maximal, characteristic, complemented |
| 2 | C2×D16 | C2 | 1 | 1 | yes | maximal, characteristic, complemented |
| 3 | SD64 | C2 | 1 | 2 | yes | maximal, complemented |
| 4 | D32 | C2 | 1 | 2 | yes | maximal, complemented |
| 5 | M64 | C2 | 1 | 1 | yes | maximal, characteristic, complemented |
| 6 | #135 | — | 2 | 1 | no | — |
| 7 | C2×D8 | — | 2 | 1 | no | — |
| 8 | Q32 | C22 | 1 | 1 | yes | characteristic, complemented |
| 9 | SD32 | — | 2 | 1 | no | — |
| 10 | D16 | — | 2 | 1 | no | — |
| 11 | D16 | C22 | 1 | 2 | yes | — |
| 12 | D16 | C22 | 1 | 1 | yes | characteristic, complemented |
| 13 | C2×C16 | C22 | 1 | 1 | yes | characteristic |
| 14 | C32 | C22 | 1 | 2 | yes | complemented |
| 15 | #41 | — | 4 | 1 | no | — |
| 16 | C2×D4 | — | 4 | 1 | no | — |
| 17 | Q16 | — | 2 | 1 | no | — |
| 18 | SD16 | — | 4 | 1 | no | — |
| 19 | D8 | — | 2 | 2 | no | — |
| 20 | D8 | — | 2 | 1 | no | — |
| 21 | D8 | — | 4 | 1 | no | — |
| 22 | C2×C8 | D4 | 1 | 1 | yes | characteristic |
| 23 | C16 | D4 | 1 | 1 | yes | characteristic |
| 24 | C16 | C23 | 1 | 1 | yes | characteristic |
| 25 | C23 | — | 8 | 1 | no | — |
| 26 | Q8 | — | 4 | 1 | no | — |
| 27 | D4 | — | 4 | 2 | no | — |
| 28 | D4 | — | 4 | 1 | no | — |
| 29 | D4 | — | 8 | 1 | no | — |
| 30 | D4 | — | 8 | 1 | no | — |
| 31 | C2×C4 | — | 8 | 1 | no | — |
| 32 | C2×C4 | D8 | 1 | 1 | yes | characteristic |
| 33 | C8 | D8 | 1 | 1 | yes | characteristic |
| 34 | C8 | C2×D4 | 1 | 1 | yes | characteristic |
| 35 | C22 | — | 8 | 1 | no | — |
| 36 | C22 | — | 8 | 2 | no | — |
| 37 | C22 | — | 16 | 2 | no | — |
| 38 | C22 | D16 | 1 | 1 | yes | characteristic |
| 39 | C4 | — | 8 | 1 | no | — |
| 40 | C4 | D16 | 1 | 1 | yes | characteristic |
| 41 | C4 | C2×D8 | 1 | 1 | yes | characteristic |
| 42 | C2 | — | 2 | 1 | no | — |
| 43 | C2 | — | 16 | 1 | no | — |
| 44 | C2 | — | 16 | 2 | no | — |
| 45 | C2 | C2×D16 | 1 | 1 | yes | characteristic |
| subgroup | G/H | |
|---|---|---|
| center, socle | C2 | C2×D16 |
| commutator, Frattini, cosocle | C16 | C23 |
| LCS | G ▷ C16 ▷ C8 ▷ C4 ▷ C2 ▷ C1 | |
| UCS | C1 ◁ C2 ◁ C2×C4 ◁ C2×C8 ◁ C2×C16 ◁ G | |
| LECS | G ▷ C16 ▷ C8 ▷ C4 ▷ C2 ▷ C1 | |
Splittings G = N ⋊ H with N normal; H ≅ G/N.
| N | H ≅ G/N | type |
|---|---|---|
| 1. #508 | C2 | semidirect |
| 2. C2×D16 | C2 | semidirect |
| 3. SD64 | C2 | semidirect |
| 4. D32 | C2 | semidirect |
| 5. M64 | C2 | semidirect |
| 8. Q32 | C22 | semidirect |
| 12. D16 | C22 | semidirect |
| 14. C32 | C22 | semidirect |
By isomorphism type — maximal subgroups of the same type appear once, whether or not they are normal.
| subgroup | index |
|---|---|
| #508 | 2 |
| C2×D16 | 2 |
| SD64 | 2 |
| D32 | 2 |
| M64 | 2 |