Finite Group Databasebeta

D2489 #19097331

order4978
automorphismAut(G) order 5824260
homologyAbelianization (H1) = C2 · Schur multiplier (H2) = C1

Aliases

dihedralD2489
unambiguous semidirect productC19⋊D131
unambiguous semidirect productC131⋊D19

Splittings

Fitting, socle, derived, HallC19×C131 ⋊ C2
SylowC131 ⋊ D19
SylowC19 ⋊ D131

Subgroups

subgroupG/H
center, Frattini, hypercenterC1G
commutator, Fitting, socle, hypocenterC19×C131C2
LCSG ▷ C19×C131
UCSC1

8 conjugacy classes of subgroups.

Full subgroup data →

Presentation

Polycyclic presentation:

2,19,131|b^a=b^18,c^a=c^130

Conjugacy classes & character table

1246 conjugacy classes. The character table is too large to display.

Relationships

maximal subgroup ofC3×D2489, D7467, (C19⋊C3)⋊D131, …
maximal normal subgroup ofC3×D2489, (C19⋊C3)⋊D131, C5×D2489, …
maximal quotient ofC3×D2489, D7467, C5×D2489, …

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(4978, 3);