Finite Group DatabasebetaFinite Group Databasebeta| order | 1280 |
| nilpotency class | 5 |
| isoclinism | isoclinic class of #7481 |
| automorphism | ? |
| homology | Abelianization (H1) = C42×C5 · Schur multiplier (H2) = C2×C4 |
| direct product | C5×#7482 |
| subgroup | G/H | |
|---|---|---|
| center, socle | C2×C5 | #1390 |
| commutator | C2×Q8 | C42×C5 |
| Frattini, cosocle | #532 | C22×C5 |
| prime radical | C5×#532 | C22 |
| LCS | G ▷ C2×Q8 ▷ C2×C4 ▷ C22 ▷ C2 ▷ C1 | |
| UCS | C1 ◁ C2×C5 ◁ C2×C4×C5 ◁ C22×C4×C5 ◁ C5×#532 ◁ G | |
278 conjugacy classes of subgroups; only the 66 normal subgroups are shown.
This group has 278 conjugacy classes of subgroups — too many to draw. Only its 66 normal subgroups are shown.
Dotted edges: containments with no intermediate normal subgroup — omitted non-normal subgroups may lie between.
| minimal degree | μ(G) = 21 |
| transitive degree | μt(G) = 80 |
A minimal faithful permutation representation — 2 generators on 21 points:
(1,2,3,4,5)(6,7,9,12)(8,16,17,13)(10,14,19,21)(11,15,18,20);(6,7,10,13,11,15,17,14)(8,12,9,16,19,20,18,21)140 conjugacy classes — view the full character table.
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(1280, 470);