Finite Group Databasebeta

D21×C643 #41008874

order27006
automorphism?
homologyAbelianization (H1) = C2×C643 · Schur multiplier (H2) = C1

Aliases

direct productD21×C643
unambiguous semidirect productC3⋊(D7×C643)
unambiguous semidirect productC7⋊(D3×C643)

Splittings

Fitting, socle, HallC3×C7×C643 ⋊ C2
derived, HallC3×C7 ⋊ C2×C643
HallC7×C643 ⋊ D3
HallC3×C643 ⋊ D7
SylowC7 ⋊ D3×C643
SylowC3 ⋊ D7×C643

Subgroups

subgroupG/H
center, hypercenterC643D21
commutator, cosocle, hypocenterC3×C7C2×C643
FrattiniC1G
Fitting, socleC3×C7×C643C2
LCSG ▷ C3×C7
UCSC1 ◁ C643

16 conjugacy classes of subgroups.

Full subgroup data →

Presentation

transitive degreeμt(G) = 13503

Conjugacy classes & character table

7716 conjugacy classes. The character table is too large to display.

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(27006, 11);