Finite Group DatabasebetaFinite Group Databasebeta| order | 19780 |
| automorphism | ? |
| homology | Abelianization (H1) = C4 · Schur multiplier (H2) = C1 |
| unambiguous semidirect product | C23⋊(C43⋊AGL(1,𝔽5)) |
| unambiguous semidirect product | C43⋊(C23⋊AGL(1,𝔽5)) |
| Fitting, socle, derived, Hall | C5×C23×C43 ⋊ C4 |
| Hall | C23×C43 ⋊ AGL(1,𝔽5) |
| Hall | C5×C43 ⋊ Dic23 |
| Hall | C5×C23 ⋊ Dic43 |
| Sylow | C43 ⋊ C23⋊AGL(1,𝔽5) |
| Sylow | C23 ⋊ C43⋊AGL(1,𝔽5) |
| Sylow | C5 ⋊ Dic989 |
| subgroup | G/H | |
|---|---|---|
| center, Frattini, hypercenter | C1 | G |
| commutator, Fitting, socle, hypocenter | C5×C23×C43 | C4 |
| prime radical, cosocle | D5×C23×C43 | C2 |
| LCS | G ▷ C5×C23×C43 | |
| UCS | C1 | |
24 conjugacy classes of subgroups.
| transitive degree | μt(G) = 4945 |
Polycyclic presentation:
2^2,5,23,43|a^2=b,c^a=c^2,d^a=d^22,e^a=e^42,c^b=c^41981 conjugacy classes. The character table is too large to display.
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(19780, 14);