Finite Group DatabasebetaFinite Group Databasebeta| order | 20740 |
| automorphism | ? |
| homology | Abelianization (H1) = C4×C5 · Schur multiplier (H2) = C1 |
| unambiguous semidirect product | #16861896⋊C5 |
| Fitting, socle, derived, Hall | C17×C61 ⋊ C4×C5 |
| Hall | C17×C61⋊C5 ⋊ C4 |
| Hall | #16861896 ⋊ C5 |
| Hall | C61⋊C5 ⋊ #595 |
| Sylow | C61 ⋊ C5×#595 |
| Sylow | C17 ⋊ #6923⋊C5 |
| subgroup | G/H | |
|---|---|---|
| center, Frattini, hypercenter | C1 | G |
| commutator, Fitting, socle, hypocenter | C17×C61 | C4×C5 |
| prime radical | C17⋊(D61⋊C5) | C2 |
| cosocle | D1037 | C2×C5 |
| LCS | G ▷ C17×C61 | |
| UCS | C1 | |
24 conjugacy classes of subgroups.
| transitive degree | μt(G) = 1037 |
Polycyclic presentation:
2,5,2,17,61|a^2=c,d^a=d^13,e^a=e^11,e^b=e^9,d^c=d^16,e^c=e^6091 conjugacy classes — view the full character table.
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(20740, 16);