Order 32128.
400 conjugacy classes of subgroups.
The subgroup lattice has 146 nodes — too large to display as a diagram.
Splittings G = N ⋊ H with N normal; H ≅ G/N.
| N | H ≅ G/N | type |
|---|---|---|
| 1. #30631818 | C2 | direct (N × H) |
| 23. C2×C251⋊C8 | Q8 | semidirect |
| 42. C251⋊C8 | C2×Q8 | semidirect |
| 68. C2×C251 | #446 | semidirect |
| 72. C251 | C2×#446 | semidirect |
| 141. C2 | #30631818 | direct (N × H) |
By isomorphism type — maximal subgroups of the same type appear once, whether or not they are normal.
| subgroup | index |
|---|---|
| #30631818 | 2 |
| C2×C4⋊(C251⋊C8) | 2 |
| C2×#22548626 | 2 |
| C2×C4×C251⋊C8 | 2 |
| C2×C4×Q8×C251 | 2 |
| C2×#446 | 251 |