Finite Group DatabasebetaFinite Group Databasebeta| order | 128 |
| nilpotency class | 2 |
| isoclinism | isoclinic class of #2403 |
| automorphism | Aut(G) = C212 (order 4096) · Inn(G) = C24 · Out(G) = C28 |
| homology | Abelianization (H1) = C24 · Schur multiplier (H2) = C23 |
No aliases for this group.
| subgroup | G/H | |
|---|---|---|
| center, commutator, Frattini, socle, cosocle | C23 | C24 |
| prime radical | C24 | C23 |
| LCS | G ▷ C23 ▷ C1 | |
| UCS | C1 ◁ C23 ◁ G | |
| LECS | G ▷ C23 ▷ C1 | |
206 conjugacy classes of subgroups; only the 92 normal subgroups are shown.
This group has 206 conjugacy classes of subgroups — too many to draw. Only its 92 normal subgroups are shown.
Dotted edges: containments with no intermediate normal subgroup — omitted non-normal subgroups may lie between.
| minimal degree | μ(G) = 24 |
| transitive degree | μt(G) = 64 |
A minimal faithful permutation representation — 4 generators on 24 points:
(2,5)(6,8)(9,10,13,12)(11,15,16,14)(17,18,21,23)(19,20,24,22);(11,16)(14,15)(17,19,21,24)(18,22,23,20);(1,2)(3,6)(4,5)(7,8)(9,11)(10,14)(12,15)(13,16)(17,19)(18,20)(21,24)(22,23);(1,3,4,7)(2,6,5,8)(9,12,13,10)(11,15,16,14)(17,20)(18,19)(21,22)(23,24)Polycyclic presentation:
2^7|a^2=g,b^2=e,d^2=f,b^a=be,c^a=cf,d^a=de,c^b=cg38 conjugacy classes — view the full character table.
| maximal subgroup of | C2×#2515, #34780, #34806, … |
| maximal normal subgroup of | C2×#2515, #34780, #34806, … |
| maximal quotient of | #13887, #13914, #13986, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(128, 1247);