Finite Group DatabasebetaFinite Group Databasebeta| order | 1640 |
| nilpotency class | 2 |
| isoclinism | isoclinic class of D4 |
| automorphism | ? |
| homology | Abelianization (H1) = C22×C5×C41 · Schur multiplier (H2) = C1 |
| direct product | C5×Q8×C41 |
| subgroup | G/H | |
|---|---|---|
| center, socle, prime radical | C2×C5×C41 | C22 |
| commutator, Frattini, cosocle | C2 | C22×C5×C41 |
| LCS | G ▷ C2 ▷ C1 | |
| UCS | C1 ◁ C2×C5×C41 ◁ G | |
24 conjugacy classes of subgroups.
| minimal degree | μ(G) = 54 |
| transitive degree | μt(G) = 1640 |
A minimal faithful permutation representation — 2 generators on 54 points:
(1,2,3,4,5)(6,7,8,9)(10,13,12,11)(14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54);(6,10,8,12)(7,11,9,13)1025 conjugacy classes. The character table is too large to display.
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(1640, 46);