Finite Group DatabasebetaFinite Group Databasebeta| order | 128 |
| nilpotency class | 3 |
| isoclinism | isoclinic class of #1913 |
| automorphism | Aut(G) = #72236721 (order 2048) · Inn(G) = #386 · Out(G) = C22×D4 |
| homology | Abelianization (H1) = C22×C4 · Schur multiplier (H2) = C24 |
No aliases for this group.
| subgroup | G/H | |
|---|---|---|
| center, socle | C2 | #386 |
| commutator | C23 | C22×C4 |
| Frattini, cosocle | C22×C4 | C23 |
| prime radical | C2×#41 | C22 |
| LCS | G ▷ C23 ▷ C2 ▷ C1 | |
| UCS | C1 ◁ C2 ◁ C22×C4 ◁ G | |
| LECS | G ▷ C22×C4 ▷ C2 ▷ C1 | |
154 conjugacy classes of subgroups.
| minimal degree | μ(G) = 32 |
| transitive degree | μt(G) = 32 |
A minimal faithful permutation representation — 3 generators on 32 points:
(1,2,5,10,6,9,11,24)(3,7,14,21,13,22,18,25)(4,15,17,26,16,8,19,23)(12,20,28,31,27,30,29,32);(1,3,11,14,6,13,5,18)(2,7,10,25,9,22,24,21)(4,12,17,29,16,27,19,28)(8,20,26,31,15,30,23,32);(1,4)(2,8)(3,12)(5,19)(6,16)(7,20)(9,15)(10,26)(11,17)(13,27)(14,29)(18,28)(21,32)(22,30)(23,24)(25,31)Polycyclic presentation:
2^7|a^2=f,b^2=dfg,f^2=g,b^a=bd,c^a=ce,d^a=dg,e^a=eg,d^b=dg,e^b=eg,f^b=fg,d^c=dg,f^c=fg29 conjugacy classes — view the full character table.
| maximal subgroup of | #12757, #12758, #12770, … |
| maximal normal subgroup of | #12757, #12758, #12770, … |
| maximal quotient of | #9108, #9110, #9189, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(128, 647);