Finite Group DatabasebetaFinite Group Databasebeta| order | 128 |
| nilpotency class | 2 |
| isoclinism | isoclinic class of #120 |
| automorphism | Aut(G) = #72260355 (order 2048) · Inn(G) = C23 · Out(G) = #23391 |
| homology | Abelianization (H1) = C2×C42 · Schur multiplier (H2) = C8 |
No aliases for this group.
| subgroup | G/H | |
|---|---|---|
| center, Frattini, cosocle | C42 | C23 |
| commutator, socle | C22 | C2×C42 |
| prime radical | C23 | C42 |
| LCS | G ▷ C22 ▷ C1 | |
| UCS | C1 ◁ C42 ◁ G | |
| LECS | G ▷ C42 ▷ C22 ▷ C1 | |
95 conjugacy classes of subgroups.
| minimal degree | μ(G) = 24 |
| transitive degree | μt(G) = 64 |
A minimal faithful permutation representation — 3 generators on 24 points:
(1,2,4,8,6,7,5,3)(9,10,12,15,13,16,19,22)(11,14,18,21,17,20,23,24);(1,3,5,7,6,8,4,2)(9,11)(10,14)(12,18)(13,17)(15,21)(16,20)(19,23)(22,24);(2,7)(3,8)(11,17)(14,20)(18,23)(21,24)Polycyclic presentation:
2^7|a^2=d,b^2=e,d^2=f,e^2=g,c^a=cg,c^b=cf56 conjugacy classes — view the full character table.
| maximal subgroup of | #7226, #11670, C2×#1453, … |
| maximal normal subgroup of | #7226, #11670, C2×#1453, … |
| maximal quotient of | #7844, #7850, #8134, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(128, 185);