Finite Group DatabasebetaFinite Group Databasebeta| order | 128 |
| nilpotency class | 3 |
| isoclinism | isoclinic class of #1595 |
| automorphism | Aut(G) = C24×#120 (order 512) · Inn(G) = #120 · Out(G) = C24 |
| homology | Abelianization (H1) = C23 · Schur multiplier (H2) = C23 |
No aliases for this group.
| subgroup | G/H | |
|---|---|---|
| center, socle | C22 | #120 |
| commutator, Frattini, cosocle | C22×C4 | C23 |
| prime radical | #447 | C2 |
| LCS | G ▷ C22×C4 ▷ C22 ▷ C1 | |
| UCS | C1 ◁ C22 ◁ C22×C4 ◁ G | |
| LECS | G ▷ C22×C4 ▷ C22 ▷ C1 | |
136 conjugacy classes of subgroups; only the 32 normal subgroups are shown.
This group has 136 conjugacy classes of subgroups — too many to draw. Only its 32 normal subgroups are shown.
Dotted edges: containments with no intermediate normal subgroup — omitted non-normal subgroups may lie between.
| minimal degree | μ(G) = 16 |
| transitive degree | μt(G) = 32 |
A minimal faithful permutation representation — 3 generators on 16 points:
(2,6)(3,4)(7,8)(13,16);(1,2)(3,6)(4,8)(5,7)(9,10)(11,13)(12,14)(15,16);(1,3,5,4)(2,6,7,8)(9,11)(10,13)(12,15)(14,16)Polycyclic presentation:
2^7|c^2=f,d^2=f,b^a=bd,c^a=ce,d^a=df,d^b=df,e^b=eg,d^c=dg23 conjugacy classes — view the full character table.
| maximal subgroup of | C2×#1597, #18100, #18126, … |
| maximal normal subgroup of | C2×#1597, #18100, #18126, … |
| maximal quotient of | #7735, #7736, #7739, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(128, 329);