Finite Group DatabasebetaFinite Group DatabasebetaOrder 21010.
16 conjugacy classes of subgroups.
| # | subgroup | G/H | class size | multiplicity | normal? | properties |
|---|---|---|---|---|---|---|
| 1 | C5×C11×C191 | C2 | 1 | 1 | yes | maximal, characteristic, complemented, Hall |
| 2 | D2101 | — | 5 | 1 | no | maximal, Hall |
| 3 | C11×C191 | D5 | 1 | 1 | yes | characteristic, complemented, Hall |
| 4 | D955 | — | 11 | 1 | no | maximal, Hall |
| 5 | C5×C191 | D11 | 1 | 1 | yes | characteristic, complemented, Hall |
| 6 | D191 | — | 55 | 1 | no | Hall |
| 7 | C191 | D55 | 1 | 1 | yes | characteristic, complemented, Sylow |
| 8 | D55 | — | 191 | 1 | no | maximal, Hall |
| 9 | C5×C11 | D191 | 1 | 1 | yes | characteristic, complemented, Hall |
| 10 | D11 | — | 955 | 1 | no | Hall |
| 11 | C11 | D955 | 1 | 1 | yes | characteristic, complemented, Sylow |
| 12 | D5 | — | 2101 | 1 | no | Hall |
| 13 | C5 | D2101 | 1 | 1 | yes | characteristic, complemented, Sylow |
| 14 | C2 | — | 10505 | 1 | no | Sylow |
| subgroup | G/H | |
|---|---|---|
| center, Frattini, hypercenter | C1 | G |
| commutator, Fitting, socle, cosocle, hypocenter | C5×C11×C191 | C2 |
| LCS | G ▷ C5×C11×C191 | |
| UCS | C1 | |
Splittings G = N ⋊ H with N normal; H ≅ G/N.
| N | H ≅ G/N | type |
|---|---|---|
| 1. C5×C11×C191 | C2 | semidirect |
| 3. C11×C191 | D5 | semidirect |
| 5. C5×C191 | D11 | semidirect |
| 7. C191 | D55 | semidirect |
| 9. C5×C11 | D191 | semidirect |
| 11. C11 | D955 | semidirect |
| 13. C5 | D2101 | semidirect |
By isomorphism type — maximal subgroups of the same type appear once, whether or not they are normal.
| subgroup | index |
|---|---|
| C5×C11×C191 | 2 |
| D2101 | 5 |
| D955 | 11 |
| D55 | 191 |