Finite Group DatabasebetaFinite Group Databasebeta| order | 128 |
| nilpotency class | 3 |
| isoclinism | isoclinic class of #99 |
| automorphism | Aut(G) = #72262013 (order 2048) · Inn(G) = C22⋊C4 · Out(G) = C27 |
| homology | Abelianization (H1) = C2×C42 · Schur multiplier (H2) = C24 |
| direct product | C2×#344 |
| subgroup | G/H | |
|---|---|---|
| center | C2×C4 | C22⋊C4 |
| commutator | C22 | C2×C42 |
| Frattini, cosocle | C22×C4 | C23 |
| socle | C22 | #95 |
| prime radical | C24 | C2×C4 |
| LCS | G ▷ C22 ▷ C2 ▷ C1 | |
| UCS | C1 ◁ C2×C4 ◁ C23×C4 ◁ G | |
| LECS | G ▷ C22×C4 ▷ C2 ▷ C1 | |
194 conjugacy classes of subgroups; only the 108 normal subgroups are shown.
This group has 194 conjugacy classes of subgroups — too many to draw. Only its 108 normal subgroups are shown.
Dotted edges: containments with no intermediate normal subgroup — omitted non-normal subgroups may lie between.
| minimal degree | μ(G) = 18 |
| transitive degree | μt(G) = 32 |
A minimal faithful permutation representation — 3 generators on 18 points:
(1,2);(3,4)(5,11,12,8)(6,10)(7,9)(13,17,18,15)(14,16);(3,5,6,13,7,12,14,18)(4,8,10,15,9,11,16,17)44 conjugacy classes — view the full character table.
| maximal subgroup of | C4×#344, #10711, #10729, … |
| maximal normal subgroup of | C4×#344, #10711, #10729, … |
| maximal quotient of | C2×#1281, #7918, #7919, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(128, 475);