Finite Group DatabasebetaFinite Group Databasebeta| order | 128 |
| nilpotency class | 4 |
| isoclinism | isoclinic class of #2121 |
| automorphism | Aut(G) = #72236702 (order 1024) · Inn(G) = C2×#99 · Out(G) = C24 |
| homology | Abelianization (H1) = C22×C4 · Schur multiplier (H2) = C23 |
No aliases for this group.
| subgroup | G/H | |
|---|---|---|
| center, socle | C2 | C2×#99 |
| commutator | C23 | C22×C4 |
| Frattini, cosocle | C2×D4 | C23 |
| prime radical | C2×#41 | C22 |
| LCS | G ▷ C23 ▷ C22 ▷ C2 ▷ C1 | |
| UCS | C1 ◁ C2 ◁ C2×C4 ◁ C2×#41 ◁ G | |
| LECS | G ▷ C2×D4 ▷ C22 ▷ C2 ▷ C1 | |
117 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)(3,11)(4,8)(5,18,19,9)(6,10)(7,13,21,28)(12,25)(14,26)(15,29)(16,31,32,23)(17,24)(20,27,22,30);(1,3,6,14)(2,7,10,21)(4,15,17,12)(5,13,19,28)(8,22,24,20)(9,11,18,26)(16,30,32,27)(23,29,31,25);(1,4,6,17)(2,8,10,24)(3,12,14,15)(5,16,19,32)(7,20,21,22)(9,23,18,31)(11,25,26,29)(13,27,28,30)Polycyclic presentation:
2^7|a^2=e,b^2=g,c^2=g,b^a=bd,d^a=df,f^a=fg,c^b=cg,e^b=ef,e^d=eg23 conjugacy classes — view the full character table.
| maximal subgroup of | #12716, #12717, #12723, … |
| maximal normal subgroup of | #12716, #12717, #12723, … |
| maximal quotient of | #11428, #11454, #11474, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(128, 855);