Finite Group Databasebeta

C7×D13×D21 #21439758

order7644
automorphism?
homologyAbelianization (H1) = C22×C7 · Schur multiplier (H2) = C2

Aliases

direct productC7×D13×D21
unambiguous semidirect product(C3×D13)⋊(C7×D7)
unambiguous semidirect product(C7×D13)⋊(D3×C7)

Splittings

Fitting, socle, HallC3×C72×C13 ⋊ C22
derivedC3×C7×C13 ⋊ C22×C7
HallC72×C13 ⋊ C2×D3
HallC3×C72 ⋊ C2×D13
SylowC72 ⋊ D3×D13
HallC3×C13 ⋊ C2×C7×D7
SylowC13 ⋊ C2×C7×D21
SylowC3 ⋊ C7×D7×D13

Subgroups

subgroupG/H
center, hypercenterC7D13×D21
commutator, hypocenterC3×C7×C13C22×C7
FrattiniC1G
Fitting, socleC3×C72×C13C22
LCSG ▷ C3×C7×C13
UCSC1 ◁ C7

104 conjugacy classes of subgroups.

Full subgroup data →

Conjugacy classes & character table

672 conjugacy classes — view the full character table.

Relationships

maximal subgroup ofD13×#11725071, C7×D13×D63, D13×C3⋊#64418, …
maximal normal subgroup ofC7×#10587716⋊D3, C7×#10587717⋊D3, C7×D13×C3⋊AGL(1,𝔽7), …
maximal quotient ofC7×D13×D63, C3×C7×D13×D21, C7×D39⋊D21, …

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(7644, 327);