Finite Group DatabasebetaFinite Group DatabasebetaOrder 256.
224 conjugacy classes of subgroups.
| # | subgroup | G/H | class size | multiplicity | normal? | properties |
|---|---|---|---|---|---|---|
| 1 | #2810 | C2 | 1 | 1 | yes | maximal, characteristic, complemented |
| 2 | #2041 | C2 | 1 | 3 | yes | maximal |
| 3 | #1271 | C2 | 1 | 3 | yes | maximal, complemented |
| 4 | C2×#127 | C22 | 1 | 1 | yes | characteristic |
| 5 | C2×#102 | — | 2 | 3 | no | — |
| 6 | C2×#102 | — | 2 | 3 | no | — |
| 7 | #400 | — | 2 | 3 | no | — |
| 8 | #389 | C22 | 1 | 3 | yes | — |
| 9 | #387 | — | 2 | 3 | no | — |
| 10 | #336 | C22 | 1 | 3 | yes | — |
| 11 | C22×D4 | — | 2 | 3 | no | — |
| 12 | C22×C8 | — | 2 | 3 | no | — |
| 13 | #127 | — | 4 | 2 | no | — |
| 14 | C2×C4⋊C4 | — | 2 | 3 | no | — |
| 15 | C2×C4⋊C4 | D4 | 1 | 3 | yes | — |
| 16 | C2×C4⋊C4 | D4 | 1 | 3 | yes | — |
| 17 | C2×C42 | — | 2 | 1 | no | — |
| 18 | C2×C42 | C23 | 1 | 1 | yes | characteristic |
| 19 | #102 | — | 4 | 6 | no | — |
| 20 | #102 | — | 4 | 6 | no | — |
| 21 | #95 | — | 2 | 3 | no | — |
| 22 | #95 | — | 2 | 3 | no | — |
| 23 | #95 | — | 2 | 1 | no | — |
| 24 | #95 | — | 2 | 3 | no | — |
| 25 | C24 | — | 4 | 1 | no | — |
| 26 | C2×D4 | — | 2 | 6 | no | — |
| 27 | C2×D4 | — | 4 | 3 | no | — |
| 28 | C2×D4 | — | 4 | 3 | no | — |
| 29 | C2×D4 | — | 4 | 3 | no | — |
| 30 | C2×D4 | — | 4 | 3 | no | — |
| 31 | C2×D4 | — | 4 | 3 | no | — |
| 32 | C22×C4 | — | 2 | 3 | no | — |
| 33 | C22×C4 | — | 2 | 3 | no | — |
| 34 | C22×C4 | C2×D4 | 1 | 3 | yes | — |
| 35 | C2×C8 | — | 4 | 3 | no | — |
| 36 | C2×C8 | — | 4 | 3 | no | — |
| 37 | C2×C8 | — | 4 | 3 | no | — |
| 38 | C4⋊C4 | — | 2 | 3 | no | — |
| 39 | C4⋊C4 | — | 2 | 3 | no | — |
| 40 | C4⋊C4 | — | 4 | 3 | no | — |
| 41 | C4⋊C4 | — | 4 | 3 | no | — |
| 42 | C4⋊C4 | — | 4 | 3 | no | — |
| 43 | C42 | — | 4 | 1 | no | — |
| 44 | C42 | — | 8 | 1 | no | — |
| 45 | C23 | — | 4 | 2 | no | — |
| 46 | C23 | — | 8 | 3 | no | — |
| 47 | C23 | — | 8 | 3 | no | — |
| 48 | C23 | #120 | 1 | 1 | yes | characteristic |
| 49 | D4 | — | 4 | 6 | no | — |
| 50 | D4 | — | 4 | 6 | no | — |
| 51 | D4 | — | 8 | 3 | no | — |
| 52 | D4 | — | 8 | 3 | no | — |
| 53 | C2×C4 | — | 2 | 3 | no | — |
| 54 | C2×C4 | — | 2 | 3 | no | — |
| 55 | C2×C4 | — | 4 | 3 | no | — |
| 56 | C2×C4 | — | 4 | 3 | no | — |
| 57 | C2×C4 | — | 4 | 3 | no | — |
| 58 | C2×C4 | — | 4 | 3 | no | — |
| 59 | C2×C4 | — | 4 | 3 | no | — |
| 60 | C2×C4 | — | 4 | 3 | no | — |
| 61 | C2×C4 | #135 | 1 | 3 | yes | — |
| 62 | C2×C4 | AGL(1,ℤ/8) | 1 | 3 | yes | — |
| 63 | C8 | — | 8 | 3 | no | — |
| 64 | C22 | — | 8 | 6 | no | — |
| 65 | C22 | — | 16 | 3 | no | — |
| 66 | C22 | — | 16 | 1 | no | — |
| 67 | C22 | #449 | 1 | 3 | yes | — |
| 68 | C22 | #454 | 1 | 3 | yes | — |
| 69 | C22 | B(4,𝔽2) | 1 | 1 | yes | characteristic |
| 70 | C4 | — | 2 | 3 | no | — |
| 71 | C4 | — | 2 | 3 | no | — |
| 72 | C4 | — | 8 | 3 | no | — |
| 73 | C4 | — | 8 | 3 | no | — |
| 74 | C2 | — | 16 | 2 | no | — |
| 75 | C2 | #1597 | 1 | 3 | yes | — |
| 76 | C2 | #1628 | 1 | 3 | yes | — |
| 77 | C2 | #1658 | 1 | 1 | yes | characteristic |
| subgroup | G/H | |
|---|---|---|
| center, socle | C23 | #120 |
| commutator, Frattini, cosocle | C2×C42 | C23 |
| prime radical | C2×#127 | C22 |
| LCS | G ▷ C2×C42 ▷ C23 ▷ C1 | |
| UCS | C1 ◁ C23 ◁ C2×C42 ◁ G | |
| LECS | G ▷ C2×C42 ▷ C23 ▷ C1 | |
Splittings G = N ⋊ H with N normal; H ≅ G/N.
| N | H ≅ G/N | type |
|---|---|---|
| 1. #2810 | C2 | semidirect |
| 3. #1271 | C2 | semidirect |
By isomorphism type — maximal subgroups of the same type appear once, whether or not they are normal.
| subgroup | index |
|---|---|
| #2810 | 2 |
| #2041 | 2 |
| #1271 | 2 |