Finite Group DatabasebetaFinite Group Databasebeta| order | 128 |
| nilpotency class | 3 |
| isoclinism | isoclinic class of #1812 |
| automorphism | Aut(G) = #72237558 (order 2048) · Inn(G) = #117 · Out(G) = C23×D4 |
| homology | Abelianization (H1) = C22×C4 · Schur multiplier (H2) = C23 |
No aliases for this group.
| subgroup | G/H | |
|---|---|---|
| center | C4 | #117 |
| commutator | C2×C4 | C22×C4 |
| Frattini, cosocle | C22×C4 | C23 |
| socle | C2 | #380 |
| prime radical | C2×#41 | C22 |
| LCS | G ▷ C2×C4 ▷ C2 ▷ C1 | |
| UCS | C1 ◁ C4 ◁ C2×M16 ◁ G | |
| LECS | G ▷ C22×C4 ▷ C2 ▷ C1 | |
126 conjugacy classes of subgroups.
| minimal degree | μ(G) = 32 |
| transitive degree | μt(G) = 32 |
A minimal faithful permutation representation — 3 generators on 32 points:
(1,2,6,10,7,11,5,20)(3,12,15,23,16,27,14,8)(4,17,18,24,19,9,21,25)(13,28,29,32,30,26,31,22);(1,3,5,14,7,16,6,15)(2,8,10,12,11,23,20,27)(4,13,18,29,19,30,21,31)(9,22,24,26,17,32,25,28);(1,4)(2,9)(3,13)(5,18)(6,21)(7,19)(8,22)(10,24)(11,17)(12,26)(14,29)(15,31)(16,30)(20,25)(23,32)(27,28)Polycyclic presentation:
2^7|a^2=f,b^2=d,d^2=g,f^2=g,b^a=bd,c^a=ce,d^a=dg,e^a=eg,f^c=fg32 conjugacy classes — view the full character table.
| maximal subgroup of | #7227, #7229, #11870, … |
| maximal normal subgroup of | #7227, #7229, #11870, … |
| maximal quotient of | #8601, #8602, #8603, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(128, 545);