Finite Group DatabasebetaFinite Group Databasebeta| order | 128 |
| nilpotency class | 4 |
| isoclinism | isoclinic class of #1357 |
| automorphism | Aut(G) = #72231265 (order 2048) · Inn(G) = #331 · Out(G) = #120 |
| homology | Abelianization (H1) = C2×C4 · Schur multiplier (H2) = C2 |
No aliases for this group.
| subgroup | G/H | |
|---|---|---|
| center, socle | C2 | #331 |
| commutator | C42 | C2×C4 |
| Frattini, cosocle | C4×C8 | C22 |
| prime radical | C22 | #100 |
| LCS | G ▷ C42 ▷ C2×C4 ▷ C2 ▷ C1 | |
| UCS | C1 ◁ C2 ◁ C2×C4 ◁ C4×C8 ◁ G | |
| LECS | G ▷ C4×C8 ▷ C2×C4 ▷ C2 ▷ C1 | |
46 conjugacy classes of subgroups.
| minimal degree | μ(G) = 32 |
| transitive degree | μt(G) = 32 |
A minimal faithful permutation representation — 2 generators on 32 points:
(1,2,4,9,5,8,17,24,6,11,18,27,20,10,28,26)(3,12,13,29,14,23,30,32,15,22,31,25,19,7,16,21);(1,3,6,15)(2,7,11,23)(4,16,18,30)(5,19,20,14)(8,22,10,12)(9,25,27,29)(13,17,31,28)(21,24,32,26)Polycyclic presentation:
2^7|a^2=d,b^2=g,c^2=f,d^2=ef,e^2=g,b^a=bc,c^a=ce,e^a=eg,f^a=fg,c^b=cf,d^b=defg,e^b=eg23 conjugacy classes — view the full character table.
| maximal subgroup of | #7521, #7522, C2×#1358, … |
| maximal normal subgroup of | #7521, #7522, C2×#1358, … |
| maximal quotient of | #7093, #7097, #7108, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(128, 90);