Order 252.
44 conjugacy classes of subgroups.
| subgroup | G/H | |
|---|---|---|
| center, Frattini, hypercenter | C1 | G |
| commutator, Fitting, socle, cosocle, hypocenter | C3×C7 | C22×C3 |
| LCS | G ▷ C3×C7 | |
| UCS | C1 | |
Splittings G = N ⋊ H with N normal; H ≅ G/N.
| N | H ≅ G/N | type |
|---|---|---|
| 1. C3⋊AGL(1,𝔽7) | C2 | semidirect |
| 2. D3×ΓL(1,𝔽8) | C2 | semidirect |
| 3. C3×AGL(1,𝔽7) | C2 | semidirect |
| 4. D3×D7 | C3 | semidirect |
| 6. C3×ΓL(1,𝔽8) | C22 | semidirect |
| 7. D21 | C2×C3 | semidirect |
| 8. C3×D7 | C2×C3 | semidirect |
| 9. D3×C7 | C2×C3 | semidirect |
| 13. AGL(1,𝔽7) | D3 | direct (N × H) |
| 16. C3×C7 | C22×C3 | semidirect |
| 18. ΓL(1,𝔽8) | C2×D3 | semidirect |
| 24. D7 | C3×D3 | semidirect |
| 28. C7 | C2×C3×D3 | semidirect |
| 35. D3 | AGL(1,𝔽7) | direct (N × H) |
| 39. C3 | C2×AGL(1,𝔽7) | semidirect |
By isomorphism type — maximal subgroups of the same type appear once, whether or not they are normal.
| subgroup | index |
|---|---|
| C3⋊AGL(1,𝔽7) | 2 |
| D3×ΓL(1,𝔽8) | 2 |
| C3×AGL(1,𝔽7) | 2 |
| D3×D7 | 3 |
| C2×AGL(1,𝔽7) | 3 |
| C2×C3×D3 | 7 |