Finite Group DatabasebetaFinite Group Databasebeta| order | 19908 |
| automorphism | ? |
| homology | Abelianization (H1) = C22×C9 · Schur multiplier (H2) = C2 |
| unambiguous semidirect product | #23755774⋊C2 |
| unambiguous semidirect product | #23755778⋊C2 |
| unambiguous semidirect product | #23755782⋊C2 |
| derived, Hall | C7×C79 ⋊ C22×C9 |
| Hall | #19097322 ⋊ C22 |
| Hall | D7×D79 ⋊ C9 |
| Sylow | C79 ⋊ C2×D7⋊C9 |
| Sylow | C7 ⋊ C2×D79⋊C9 |
| subgroup | G/H | |
|---|---|---|
| center, Frattini, hypercenter | C3 | #15693299⋊C2 |
| commutator, hypocenter | C7×C79 | C22×C9 |
| Fitting, socle, cosocle | C3×C7×C79 | C22×C3 |
| prime radical | C3×D7×D79 | C3 |
| LCS | G ▷ C7×C79 | |
| UCS | C1 ◁ C3 | |
60 conjugacy classes of subgroups.
| transitive degree | μt(G) = 4977 |
Polycyclic presentation:
2^2,3,7,79,3|c^3=f,e^a=e^78,d^b=d^6,d^c=d^2,e^c=e^55237 conjugacy classes — view the full character table.
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(19908, 27);