Finite Group DatabasebetaFinite Group Databasebeta| order | 1280 |
| nilpotency class | 3 |
| isoclinism | isoclinic class of #1304 |
| automorphism | ? |
| homology | Abelianization (H1) = C4×C5×C8 · Schur multiplier (H2) = C2×C4 |
| direct product | C5×#7033 |
| subgroup | G/H | |
|---|---|---|
| center, socle | C23×C5 | #95 |
| commutator | C23 | C4×C5×C8 |
| Frattini, cosocle | C22×C42 | C22×C5 |
| prime radical | C24×C5 | C42 |
| LCS | G ▷ C23 ▷ C22 ▷ C1 | |
| UCS | C1 ◁ C23×C5 ◁ C22×C42×C5 ◁ G | |
362 conjugacy classes of subgroups; only the 118 normal subgroups are shown.
This group has 362 conjugacy classes of subgroups — too many to draw. Only its 118 normal subgroups are shown.
Dotted edges: containments with no intermediate normal subgroup — omitted non-normal subgroups may lie between.
| minimal degree | μ(G) = 29 |
| transitive degree | μt(G) = 640 |
A minimal faithful permutation representation — 2 generators on 29 points:
(1,2,3,4,5)(6,7)(8,12)(9,11)(10,13)(14,15,16,18,17,19,20,21)(22,23,26,24,25,28,27,29);(6,8)(7,10,11,12)(9,13)(22,24,27,28,25,29,26,23)260 conjugacy classes — view the full character table.
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(1280, 21);