Finite Group DatabasebetaFinite Group Databasebeta| order | 1280 |
| nilpotency class | 2 |
| isoclinism | isoclinic class of #2403 |
| automorphism | ? |
| homology | Abelianization (H1) = C25×C5 · Schur multiplier (H2) = C26×C4 |
| direct product | C2×C5×#2532 |
| subgroup | G/H | |
|---|---|---|
| center, socle | C24×C5 | C24 |
| commutator, Frattini, cosocle | C23 | C25×C5 |
| prime radical | C25×C5 | C23 |
| LCS | G ▷ C23 ▷ C1 | |
| UCS | C1 ◁ C24×C5 ◁ G | |
2138 conjugacy classes of subgroups.
| minimal degree | μ(G) = 31 |
| transitive degree | μt(G) = 640 |
A minimal faithful permutation representation — 5 generators on 31 points:
(1,2)(27,28,29,30,31);(3,4,7,5)(6,9,10,8)(12,13)(14,18)(21,25)(24,26);(4,5)(8,9)(11,12,15,13)(14,16,18,17)(19,20,23,22)(21,24,25,26);(3,5,7,4)(6,9,10,8)(11,13,15,12)(14,17,18,16)(19,21)(20,24)(22,26)(23,25);(3,6,7,10)(4,8,5,9)(11,14)(12,16)(13,17)(15,18)(19,22,23,20)(21,26,25,24)380 conjugacy classes — view the full character table.
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(1280, 27786);