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) = C24×C4 |
No aliases for this group.
| subgroup | G/H | |
|---|---|---|
| center, commutator, Frattini, socle, cosocle | C23 | C24 |
| prime radical | C2×#120 | C2 |
| LCS | G ▷ C23 ▷ C1 | |
| UCS | C1 ◁ C23 ◁ G | |
| LECS | G ▷ C23 ▷ C1 | |
393 conjugacy classes of subgroups; only the 112 normal subgroups are shown.
This group has 393 conjugacy classes of subgroups — too many to draw. Only its 112 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 — 4 generators on 16 points:
(2,3)(9,10)(11,12)(13,14)(15,16);(1,2,4,3)(6,8)(10,14)(11,15);(1,2,4,3)(5,6)(7,8)(9,11,13,15)(10,12,14,16);(1,3,4,2)(9,12)(10,15)(11,14)(13,16)Polycyclic presentation:
2^7|b^2=f,c^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×#2472, #34670, #34681, … |
| maximal normal subgroup of | C2×#2472, #34670, #34681, … |
| maximal quotient of | #13873, #13896, #13986, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(128, 1204);