Finite Group Databasebeta

D7×D639 #31822015

order17892
automorphism?
homologyAbelianization (H1) = C22 · Schur multiplier (H2) = C2

Aliases

direct productD7×D639
unambiguous semidirect product(C9×D7)⋊D71
unambiguous semidirect product(D7×C71)⋊D9

Splittings

Fitting, derived, HallC7×C9×C71 ⋊ C22
HallC9×C71 ⋊ C2×D7
HallC7×C71 ⋊ C2×D9
SylowC71 ⋊ D7×D9
HallC7×C9 ⋊ C2×D71
SylowC9 ⋊ D7×D71
SylowC7 ⋊ C2×D639

Subgroups

subgroupG/H
center, hypercenterC1G
commutator, Fitting, cosocle, hypocenterC7×C9×C71C22
FrattiniC3D7×D213
socleC3×C7×C71C2×D3
LCSG ▷ C7×C9×C71
UCSC1

60 conjugacy classes of subgroups.

Full subgroup data →

Presentation

transitive degreeμt(G) = 4473

Conjugacy classes & character table

1605 conjugacy classes. The character table is too large to display.

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(17892, 32);