Finite Group DatabasebetaFinite Group DatabasebetaOrder 684.
36 conjugacy classes of subgroups.
| # | subgroup | G/H | class size | multiplicity | normal? | properties |
|---|---|---|---|---|---|---|
| 1 | C2×C32×C19 | C2 | 1 | 1 | yes | maximal, characteristic |
| 2 | C3×Dic19 | C3 | 1 | 4 | yes | maximal, direct product factor |
| 3 | C32×C19 | C4 | 1 | 1 | yes | characteristic, complemented, Hall |
| 4 | C2×C3×C19 | C2×C3 | 1 | 4 | yes | — |
| 5 | Dic19 | C32 | 1 | 1 | yes | characteristic, direct product factor, Hall |
| 6 | C3×C19 | C3×C4 | 1 | 4 | yes | complemented |
| 7 | C2×C19 | C2×C32 | 1 | 1 | yes | characteristic |
| 8 | C32×C4 | — | 19 | 1 | no | maximal, Hall |
| 9 | C19 | C32×C4 | 1 | 1 | yes | characteristic, complemented, Sylow |
| 10 | C2×C32 | D19 | 1 | 1 | yes | characteristic |
| 11 | C3×C4 | — | 19 | 4 | no | — |
| 12 | C32 | Dic19 | 1 | 1 | yes | characteristic, direct product factor, Sylow |
| 13 | C2×C3 | C3×D19 | 1 | 4 | yes | — |
| 14 | C4 | — | 19 | 1 | no | Sylow |
| 15 | C3 | C3×Dic19 | 1 | 4 | yes | direct product factor |
| 16 | C2 | C32×D19 | 1 | 1 | yes | characteristic |
| subgroup | G/H | |
|---|---|---|
| center, hypercenter | C2×C32 | D19 |
| commutator, hypocenter | C19 | C32×C4 |
| Frattini | C2 | C32×D19 |
| Fitting, socle, prime radical | C2×C32×C19 | C2 |
| cosocle | C2×C19 | C2×C32 |
| LCS | G ▷ C19 | |
| UCS | C1 ◁ C2×C32 | |
Splittings G = N ⋊ H with N normal; H ≅ G/N.
| N | H ≅ G/N | type |
|---|---|---|
| 2. C3×Dic19 | C3 | direct (N × H) |
| 3. C32×C19 | C4 | semidirect |
| 5. Dic19 | C32 | direct (N × H) |
| 6. C3×C19 | C3×C4 | semidirect |
| 9. C19 | C32×C4 | semidirect |
| 12. C32 | Dic19 | direct (N × H) |
| 15. C3 | C3×Dic19 | direct (N × H) |
By isomorphism type — maximal subgroups of the same type appear once, whether or not they are normal.
| subgroup | index |
|---|---|
| C2×C32×C19 | 2 |
| C3×Dic19 | 3 |
| C32×C4 | 19 |