Finite Group DatabasebetaFinite Group DatabasebetaOrder 2187.
422 conjugacy classes of subgroups.
| # | subgroup | G/H | class size | multiplicity | normal? | properties |
|---|---|---|---|---|---|---|
| 1 | C32×C9⋊C9 | C3 | 1 | 1 | yes | maximal, characteristic |
| 2 | #10624549 | C3 | 1 | 3 | yes | maximal |
| 3 | #10624466 | C3 | 1 | 9 | yes | maximal |
| 4 | C33×C9 | C32 | 1 | 3 | yes | — |
| 5 | C33×C9 | C32 | 1 | 1 | yes | characteristic |
| 6 | C3×C9⋊C9 | — | 3 | 3 | no | — |
| 7 | C3×C9⋊C9 | — | 3 | 6 | no | — |
| 8 | C3×C9⋊C9 | C9 | 1 | 9 | yes | complemented |
| 9 | C3×C32⋊C9 | C32 | 1 | 9 | yes | — |
| 10 | #6855 | — | 3 | 9 | no | — |
| 11 | C34 | C33 | 1 | 1 | yes | characteristic |
| 12 | C32×C9 | — | 3 | 9 | no | — |
| 13 | C32×C9 | — | 3 | 3 | no | — |
| 14 | C32×C9 | — | 3 | 6 | no | — |
| 15 | C32×C9 | — | 3 | 9 | no | — |
| 16 | C32×C9 | — | 9 | 9 | no | — |
| 17 | C32×C9 | C3×C9 | 1 | 3 | yes | — |
| 18 | C32×C9 | C3×C9 | 1 | 9 | yes | — |
| 19 | C32×C9 | H(3,𝔽3) | 1 | 3 | yes | — |
| 20 | C32×C9 | 3−1+2 | 1 | 6 | yes | — |
| 21 | C9⋊C9 | — | 3 | 27 | no | — |
| 22 | C32⋊C9 | — | 3 | 27 | no | — |
| 23 | C33 | — | 3 | 9 | no | — |
| 24 | C33 | C32×C9 | 1 | 1 | yes | characteristic |
| 25 | C33 | C3×H(3,𝔽3) | 1 | 1 | yes | characteristic |
| 26 | C33 | C3×3−1+2 | 1 | 2 | yes | — |
| 27 | C33 | #737 | 1 | 9 | yes | — |
| 28 | C3×C9 | — | 3 | 9 | no | — |
| 29 | C3×C9 | — | 3 | 9 | no | — |
| 30 | C3×C9 | — | 3 | 18 | no | — |
| 31 | C3×C9 | — | 3 | 9 | no | — |
| 32 | C3×C9 | — | 9 | 18 | no | — |
| 33 | C3×C9 | — | 9 | 9 | no | — |
| 34 | C3×C9 | — | 9 | 9 | no | — |
| 35 | C3×C9 | — | 9 | 27 | no | — |
| 36 | C3×C9 | — | 9 | 9 | no | — |
| 37 | C3×C9 | C32⋊C9 | 1 | 9 | yes | — |
| 38 | C32 | — | 3 | 27 | no | — |
| 39 | C32 | — | 3 | 3 | no | — |
| 40 | C32 | — | 3 | 6 | no | — |
| 41 | C32 | C3×C32⋊C9 | 1 | 1 | yes | characteristic |
| 42 | C32 | #6887 | 1 | 3 | yes | — |
| 43 | C32 | #6893 | 1 | 3 | yes | — |
| 44 | C32 | #6895 | 1 | 6 | yes | — |
| 45 | C32 | #6913 | 1 | 9 | yes | — |
| 46 | C9 | — | 3 | 9 | no | — |
| 47 | C9 | — | 9 | 9 | no | — |
| 48 | C9 | — | 27 | 9 | no | — |
| 49 | C3 | — | 3 | 3 | no | — |
| 50 | C3 | — | 3 | 6 | no | — |
| 51 | C3 | #10624549 | 1 | 1 | yes | characteristic |
| 52 | C3 | #10624692 | 1 | 3 | yes | — |
| 53 | C3 | #10624817 | 1 | 9 | yes | — |
| subgroup | G/H | |
|---|---|---|
| center, socle | C33 | C3×H(3,𝔽3) |
| commutator | C33 | C32×C9 |
| Frattini, prime radical, cosocle | C34 | C33 |
| LCS | G ▷ C33 ▷ C3 ▷ C1 | |
| UCS | C1 ◁ C33 ◁ C33×C9 ◁ G | |
| LECS | G ▷ C34 ▷ C3 ▷ C1 | |
Splittings G = N ⋊ H with N normal; H ≅ G/N.
| N | H ≅ G/N | type |
|---|---|---|
| 8. C3×C9⋊C9 | C9 | semidirect |
By isomorphism type — maximal subgroups of the same type appear once, whether or not they are normal.
| subgroup | index |
|---|---|
| C32×C9⋊C9 | 3 |
| #10624549 | 3 |
| #10624466 | 3 |