Finite Group DatabasebetaFinite Group Databasebeta| order | 400 |
| nilpotency class | 3 |
| isoclinism | isoclinic class of D8 |
| automorphism | ? |
| homology | Abelianization (H1) = C22×C52 · Schur multiplier (H2) = C5 |
| direct product | C52×Q16 |
| subgroup | G/H | |
|---|---|---|
| center, socle, prime radical | C2×C52 | D4 |
| commutator, Frattini, cosocle | C4 | C22×C52 |
| LCS | G ▷ C4 ▷ C2 ▷ C1 | |
| UCS | C1 ◁ C2×C52 ◁ C4×C52 ◁ G | |
72 conjugacy classes of subgroups.
| minimal degree | μ(G) = 26 |
| transitive degree | μt(G) = 400 |
A minimal faithful permutation representation — 2 generators on 26 points:
(1,2,3,4,5)(11,12,13,14,15,16,17,18)(19,26,25,24,23,22,21,20);(6,7,8,9,10)(11,19,15,23)(12,20,16,24)(13,21,17,25)(14,22,18,26)175 conjugacy classes — view the full character table.
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(400, 115);