Order 32128.
38 conjugacy classes of subgroups.
| subgroup | G/H | |
|---|---|---|
| center, Frattini | C32 | C2×D251 |
| commutator, socle | C2×C251 | C2×C32 |
| Fitting | C64×C251 | C2 |
| prime radical | C2×D251 | C32 |
| cosocle | C32×C251 | C22 |
| hypercenter | C64 | D251 |
| hypocenter | C251 | M128 |
| LCS | G ▷ C2×C251 ▷ C251 | |
| UCS | C1 ◁ C32 ◁ C64 | |
Splittings G = N ⋊ H with N normal; H ≅ G/N.
| N | H ≅ G/N | type |
|---|---|---|
| 2. C251⋊C64 | C2 | semidirect |
| 3. C64×C251 | C2 | semidirect |
| 18. C251 | M128 | semidirect |
| 22. C64 | D251 | semidirect |
By isomorphism type — maximal subgroups of the same type appear once, whether or not they are normal.
| subgroup | index |
|---|---|
| C32×D251 | 2 |
| C251⋊C64 | 2 |
| C64×C251 | 2 |
| M128 | 251 |