Finite Group DatabasebetaFinite Group Databasebeta| order | 1280 |
| nilpotency class | 4 |
| isoclinism | isoclinic class of #2184 |
| automorphism | ? |
| homology | Abelianization (H1) = C24×C5 · Schur multiplier (H2) = C24 |
| direct product | C5×#33667 |
| subgroup | G/H | |
|---|---|---|
| center | C2×C4×C5 | C2×D8 |
| commutator, Frattini, cosocle | C2×C8 | C24×C5 |
| socle | C22×C5 | C22×D8 |
| prime radical | C2×C5×#135 | C22 |
| LCS | G ▷ C2×C8 ▷ C4 ▷ C2 ▷ C1 | |
| UCS | C1 ◁ C2×C4×C5 ◁ C2×C42×C5 ◁ C2×C4×C5×C8 ◁ G | |
552 conjugacy classes of subgroups.
| minimal degree | μ(G) = 45 |
| transitive degree | μt(G) = 640 |
A minimal faithful permutation representation — 4 generators on 45 points:
(1,2,3,4,5)(6,7)(8,11)(9,10)(12,13)(14,15,17,22)(16,25,26,20)(18,21,29,36)(19,32,30,24)(23,38,37,31)(27,39,42,33)(28,35,43,41)(34,44,40,45);(7,10)(11,13)(14,16,17,26)(15,20,22,25)(18,27,29,42)(19,28,30,43)(21,33,36,39)(23,34,37,40)(24,35,32,41)(31,44,38,45);(15,21)(18,31)(19,30)(20,33)(22,36)(23,24)(25,39)(27,44)(28,43)(29,38)(32,37)(34,35)(40,41)(42,45);(6,8,9,12)(7,11,10,13)290 conjugacy classes — view the full character table.
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(1280, 26655);