Finite Group Databasebeta

D21×C137 #19153402

order5754
isoclinismisoclinic class of D21
automorphism?
homologyAbelianization (H1) = C2×C137 · Schur multiplier (H2) = C1

Aliases

direct productD21×C137
unambiguous semidirect productC3⋊(D7×C137)
unambiguous semidirect productC7⋊(D3×C137)

Splittings

Fitting, socle, HallC3×C7×C137 ⋊ C2
derived, HallC3×C7 ⋊ C2×C137
HallC7×C137 ⋊ D3
HallC3×C137 ⋊ D7
SylowC7 ⋊ D3×C137
SylowC3 ⋊ D7×C137

Subgroups

subgroupG/H
center, hypercenterC137D21
commutator, hypocenterC3×C7C2×C137
FrattiniC1G
Fitting, socleC3×C7×C137C2
LCSG ▷ C3×C7
UCSC1 ◁ C137

16 conjugacy classes of subgroups.

Full subgroup data →

Conjugacy classes & character table

1644 conjugacy classes. The character table is too large to display.

Relationships

maximal subgroup ofD21×D137, D3×D7×C137, D21⋊D137, …
maximal normal subgroup ofD21×D137, D3×D7×C137, D21⋊D137, …
maximal quotient ofDic21×C137, C2×D21×C137, D63×C137, …

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(5754, 8);