Finite Group Databasebeta

C7×D17×D21 #23756244

order9996
automorphism?
homologyAbelianization (H1) = C22×C7 · Schur multiplier (H2) = C2

Aliases

direct productC7×D17×D21
unambiguous semidirect product(C3×D17)⋊(C7×D7)
unambiguous semidirect product(C7×D17)⋊(D3×C7)

Splittings

Fitting, socle, HallC3×C72×C17 ⋊ C22
derivedC3×C7×C17 ⋊ C22×C7
HallC72×C17 ⋊ C2×D3
HallC3×C72 ⋊ C2×D17
HallC3×C17 ⋊ C2×C7×D7
SylowC72 ⋊ D3×D17
SylowC17 ⋊ C2×C7×D21
SylowC3 ⋊ C7×D7×D17

Subgroups

subgroupG/H
center, hypercenterC7D17×D21
commutator, cosocle, hypocenterC3×C7×C17C22×C7
FrattiniC1G
Fitting, socleC3×C72×C17C22
LCSG ▷ C3×C7×C17
UCSC1 ◁ C7

104 conjugacy classes of subgroups.

Full subgroup data →

Conjugacy classes & character table

840 conjugacy classes — view the full character table.

Relationships

maximal subgroup ofD17×#11725071, C7×D17×D63, D17×C3⋊#64418, …
maximal normal subgroup ofC7×D17×C3⋊AGL(1,𝔽7), ΓL(1,𝔽8)×D17×D21, D17×C3⋊#64423, …
maximal quotient ofC7×D17×D63, C3×C7×D17×D21, C7×D51⋊D21, …

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(9996, 147);