Finite Group DatabasebetaFinite Group Databasebeta| order | 420 |
| isoclinism | isoclinic class of D5×AGL(1,𝔽7) |
| automorphism | Aut(G) = AGL(1,𝔽5)×AGL(1,𝔽7) (order 840) · Inn(G) = G · Out(G) = C2 |
| homology | Abelianization (H1) = C22×C3 · Schur multiplier (H2) = C2 |
| Fitting, socle, derived, Hall | C5×C7 ⋊ C22×C3 |
| Hall | D5×D7 ⋊ C3 |
| Hall | C5×ΓL(1,𝔽8) ⋊ C22 |
| Hall | ΓL(1,𝔽8) ⋊ C2×D5 |
| Sylow | C7 ⋊ C2×C3×D5 |
| Sylow | C5 ⋊ C2×AGL(1,𝔽7) |
| subgroup | G/H | |
|---|---|---|
| center, Frattini, hypercenter | C1 | G |
| commutator, Fitting, socle, cosocle, hypocenter | C5×C7 | C22×C3 |
| LCS | G ▷ C5×C7 | |
| UCS | C1 | |
40 conjugacy classes of subgroups.
| minimal degree | μ(G) = 12 |
| transitive degree | μt(G) = 35 |
A minimal faithful permutation representation — 2 generators on 12 points:
(1,2,4,5,3)(7,10,11,8,9,12);(2,3)(4,5)(6,7,9,12,11,10,8)28 conjugacy classes — view the full character table.
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(420, 16);