Finite Group DatabasebetaFinite Group Databasebeta| order | 400 |
| nilpotency class | 2 |
| isoclinism | isoclinic class of D4 |
| automorphism | ? |
| homology | Abelianization (H1) = C23×C52 · Schur multiplier (H2) = C22×C5 |
| direct product | C2×C52×Q8 |
| subgroup | G/H | |
|---|---|---|
| center, socle, prime radical | C22×C52 | C22 |
| commutator, Frattini, cosocle | C2 | C23×C52 |
| LCS | G ▷ C2 ▷ C1 | |
| UCS | C1 ◁ C22×C52 ◁ G | |
152 conjugacy classes of subgroups.
| minimal degree | μ(G) = 20 |
| transitive degree | μt(G) = 400 |
A minimal faithful permutation representation — 3 generators on 20 points:
(1,2)(11,12,13,14,15);(3,4,5,6)(7,10,9,8)(16,17,18,19,20);(3,7,5,9)(4,8,6,10)250 conjugacy classes — view the full character table.
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(400, 203);