Finite Group DatabasebetaFinite Group Databasebeta| order | 320 |
| nilpotency class | 3 |
| isoclinism | isoclinic class of #99 |
| automorphism | ? |
| homology | Abelianization (H1) = C22×C4×C5 · Schur multiplier (H2) = C23 |
| direct product | C5×#413 |
| subgroup | G/H | |
|---|---|---|
| center | C4×C5 | C22⋊C4 |
| commutator | C22 | C22×C4×C5 |
| Frattini, cosocle | C2×C4 | C23×C5 |
| socle | C2×C5 | C2×C22⋊C4 |
| prime radical | C2×C5×#41 | C2 |
| LCS | G ▷ C22 ▷ C2 ▷ C1 | |
| UCS | C1 ◁ C4×C5 ◁ C22×C4×C5 ◁ G | |
150 conjugacy classes of subgroups.
| minimal degree | μ(G) = 21 |
| transitive degree | μt(G) = 80 |
A minimal faithful permutation representation — 3 generators on 21 points:
(1,2,5,10,6,9,4,8)(3,11,12,16,13,7,14,15)(17,18,19,20,21);(1,3)(2,7)(4,12)(5,14)(6,13)(8,15)(9,11)(10,16);(1,4,6,5)(2,8,9,10)(3,12,13,14)(7,15,11,16)110 conjugacy classes — view the full character table.
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(320, 914);