Finite Group DatabasebetaFinite Group Databasebeta| order | 400 |
| nilpotency class | 3 |
| isoclinism | isoclinic class of D8 |
| automorphism | Aut(G) = C4×C5×AGL(1,ℤ/8) (order 640) · Inn(G) = D4 · Out(G) = C22×C4×C5 |
| homology | Abelianization (H1) = C22×C25 · Schur multiplier (H2) = C1 |
| direct product | Q16×C25 |
| subgroup | G/H | |
|---|---|---|
| center | C2×C25 | D4 |
| commutator | C4 | C22×C25 |
| Frattini, cosocle | C4×C5 | C22×C5 |
| socle, prime radical | C2×C5 | C5×D4 |
| LCS | G ▷ C4 ▷ C2 ▷ C1 | |
| UCS | C1 ◁ C2×C25 ◁ C4×C25 ◁ G | |
27 conjugacy classes of subgroups.
| minimal degree | μ(G) = 41 |
| transitive degree | μt(G) = 400 |
A minimal faithful permutation representation — 2 generators on 41 points:
(1,2,3,4,5,6,7,8)(9,16,15,14,13,12,11,10)(17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41);(1,9,5,13)(2,10,6,14)(3,11,7,15)(4,12,8,16)175 conjugacy classes — view the full character table.
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(400, 27);