Finite Group DatabasebetaFinite Group Databasebeta| order | 128 |
| nilpotency class | 3 |
| isoclinism | isoclinic class of #465 |
| automorphism | Aut(G) order 8192 |
| homology | Abelianization (H1) = C24 · Schur multiplier (H2) = C25 |
No aliases for this group.
| subgroup | G/H | |
|---|---|---|
| center | C2×C4 | C2×D4 |
| commutator, Frattini, cosocle | C2×C4 | C24 |
| socle | C22 | C22×D4 |
| LCS | G ▷ C2×C4 ▷ C2 ▷ C1 | |
| UCS | C1 ◁ C2×C4 ◁ C2×C42 ◁ G | |
| LECS | G ▷ C2×C4 ▷ C2 ▷ C1 | |
228 conjugacy classes of subgroups.
| minimal degree | μ(G) = 16 |
| transitive degree | μt(G) = 64 |
A minimal faithful permutation representation — 4 generators on 16 points:
(1,2)(3,6)(4,5)(7,8)(10,13)(11,14)(15,16);(2,5)(6,8);(9,10,14,16,12,15,11,13);(1,3,4,7)(2,6,5,8)Polycyclic presentation:
2^7|c^2=fg,d^2=e,f^2=g,b^a=be,c^a=cf,f^a=fg44 conjugacy classes — view the full character table.
| maximal subgroup of | #9053, #9719, #9721, … |
| maximal normal subgroup of | #9053, #9719, #9721, … |
| maximal quotient of | #20817, #21275, #21401, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(128, 1901);