Finite Group DatabasebetaFinite Group Databasebeta| order | 1280 |
| nilpotency class | 2 |
| isoclinism | isoclinic class of #2403 |
| automorphism | ? |
| homology | Abelianization (H1) = C25×C5 · Schur multiplier (H2) = C27 |
| direct product | C2×C5×#2505 |
| 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 | |
2486 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);(3,4,7,8)(5,10,9,6)(11,12,15,17)(13,14,18,16)(20,23)(21,25);(4,8)(5,9)(11,13,15,18)(12,16,17,14)(19,20)(21,24)(22,23)(25,26);(3,5,7,9)(4,6,8,10)(11,13)(12,14)(15,18)(16,17)(19,21,22,25)(20,24,23,26);(3,6)(4,9)(5,8)(7,10)(11,14)(12,13)(15,16)(17,18)(19,20)(21,24)(22,23)(25,26)380 conjugacy classes — view the full character table.
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(1280, 27736);