Finite Group DatabasebetaFinite Group Databasebeta| order | 128 |
| nilpotency class | 2 |
| isoclinism | isoclinic class of #2846 |
| automorphism | Aut(G) order 32768 |
| homology | Abelianization (H1) = C24 · Schur multiplier (H2) = C23×C4 |
No aliases for this group.
| subgroup | G/H | |
|---|---|---|
| center, commutator, Frattini, socle, cosocle | C23 | C24 |
| prime radical | C22×D4 | C22 |
| LCS | G ▷ C23 ▷ C1 | |
| UCS | C1 ◁ C23 ◁ G | |
| LECS | G ▷ C23 ▷ C1 | |
262 conjugacy classes of subgroups.
| minimal degree | μ(G) = 20 |
| transitive degree | μt(G) = 64 |
A minimal faithful permutation representation — 4 generators on 20 points:
(2,4)(6,9)(10,12)(14,16)(18,19);(5,6)(7,10)(8,9)(11,12)(13,14,17,16)(15,18,20,19);(1,2,3,4)(5,6)(7,10)(8,9)(11,12)(13,15,17,20)(14,18,16,19);(5,7,8,11)(6,10,9,12)(13,16,17,14)(15,19,20,18)Polycyclic presentation:
2^7|b^2=g,c^2=ef,d^2=e,b^a=be,c^a=cf,d^a=dg44 conjugacy classes — view the full character table.
| maximal subgroup of | #7656, #7676, #7696, … |
| maximal normal subgroup of | #7656, #7676, #7696, … |
| maximal quotient of | #14689, #14700, #14701, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(128, 1593);