Finite Group DatabasebetaFinite Group DatabasebetaOrder 20864.
5796 conjugacy classes of subgroups; only the 3201 normal subgroups are shown.
This group has 5796 conjugacy classes of subgroups — too many to draw. Only its 3201 normal subgroups are shown.
Dotted edges: containments with no intermediate normal subgroup — omitted non-normal subgroups may lie between.
| subgroup | G/H | |
|---|---|---|
| center, Frattini | C2 | C25×D163 |
| commutator, socle, cosocle | C2×C163 | C26 |
| Fitting | #585×C163 | C2 |
| hypercenter | #585 | D163 |
| hypocenter | C163 | 2−1+6 |
| LCS | G ▷ C2×C163 ▷ C163 | |
| UCS | C1 ◁ C2 ◁ #585 | |
Splittings G = N ⋊ H with N normal; H ≅ G/N.
| N | H ≅ G/N | type |
|---|---|---|
| 1. #23782501 | C2 | semidirect |
| 2. #23782500 | C2 | semidirect |
| 3. C2×#19104782 | C2 | semidirect |
| 4. 2−1+4×D163 | C2 | semidirect |
| 5. #585×C163 | C2 | semidirect |
| 6. #19104783 | C22 | semidirect |
| 7. #19104782 | C22 | semidirect |
| 8. #19104782 | C22 | semidirect |
| 9. #19104781 | C22 | semidirect |
| 10. #19104780 | C22 | semidirect |
| 11. C2×#14579699 | C22 | semidirect |
| 12. C2×#14579698 | C22 | semidirect |
| 13. #41×D163 | C22 | semidirect |
| 14. C22×Dic326 | C22 | semidirect |
| 15. C2×Q8×D163 | C22 | semidirect |
| 16. 2−1+4×C163 | C22 | semidirect |
| 17. H(5,𝔽2)×C163 | C22 | semidirect |
| 18. C2×#41×C163 | C22 | semidirect |
| 59. C163 | 2−1+6 | semidirect |
| 63. #585 | D163 | semidirect |
| 69. 2−1+4 | C2×D163 | semidirect |
| 72. H(5,𝔽2) | C2×D163 | semidirect |
| 76. C2×#41 | C2×D163 | semidirect |
By isomorphism type — maximal subgroups of the same type appear once, whether or not they are normal.
| subgroup | index |
|---|---|
| #23782501 | 2 |
| #23782500 | 2 |
| C2×#19104782 | 2 |
| 2−1+4×D163 | 2 |
| #585×C163 | 2 |
| 2−1+6 | 163 |