Finite Group DatabasebetaFinite Group Databasebeta| order | 128 |
| nilpotency class | 3 |
| isoclinism | isoclinic class of #3186 |
| automorphism | Aut(G) order 8192 |
| homology | Abelianization (H1) = C24 · Schur multiplier (H2) = C23×C4 |
No aliases for this group.
| subgroup | G/H | |
|---|---|---|
| center, socle | C22 | C22×D4 |
| commutator, Frattini, cosocle | C2×C4 | C24 |
| prime radical | #532 | C2 |
| LCS | G ▷ C2×C4 ▷ C2 ▷ C1 | |
| UCS | C1 ◁ C22 ◁ C2×C42 ◁ G | |
| LECS | G ▷ C2×C4 ▷ C2 ▷ C1 | |
214 conjugacy classes of subgroups; only the 96 normal subgroups are shown.
This group has 214 conjugacy classes of subgroups — too many to draw. Only its 96 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) = 64 |
A minimal faithful permutation representation — 4 generators on 16 points:
(1,2)(3,7)(4,6)(5,8)(10,13)(11,15)(14,16);(1,3,4,8)(2,5,6,7);(3,8)(5,7)(9,10,12,14)(11,16,15,13);(2,6)(5,7)Polycyclic presentation:
2^7|b^2=e,c^2=g,f^2=g,b^a=be,c^a=cf,d^a=de,f^a=fg,c^b=ce,f^c=fg32 conjugacy classes — view the full character table.
| maximal subgroup of | #9267, #9289, #9301, … |
| maximal normal subgroup of | #9267, #9289, #9301, … |
| maximal quotient of | #21804, #21859, #21981, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(128, 1938);