Finite Group Databasebeta

D21⋊D23 #14515388

order1932
isoclinismisoclinic class of D21⋊D23
automorphism?
homologyAbelianization (H1) = C22 · Schur multiplier (H2) = C2

Aliases

unambiguous semidirect productD21⋊D23
unambiguous semidirect productD69⋊D7
unambiguous semidirect productD161⋊D3

Splittings

Fitting, socle, derived, HallC3×C7×C23 ⋊ C22
HallC7×C23 ⋊ C2×D3
HallC3×C23 ⋊ C2×D7
SylowC23 ⋊ D3×D7
HallC3×C7 ⋊ C2×D23
SylowC7 ⋊ D3×D23
SylowC3 ⋊ D7×D23

Subgroups

subgroupG/H
center, Frattini, hypercenterC1G
commutator, Fitting, socle, cosocle, hypocenterC3×C7×C23C22
LCSG ▷ C3×C7×C23
UCSC1

40 conjugacy classes of subgroups.

Full subgroup data →

Presentation

minimal degreeμ(G) = 33
transitive degreeμt(G) = 483

Polycyclic presentation:

2^2,3,7,23|d^a=d^6,e^a=e^22,c^b=c^2,d^b=d^6

Conjugacy classes & character table

147 conjugacy classes — view the full character table.

Relationships

maximal subgroup ofD69⋊D49, C7×D21⋊D23, D69⋊(C7⋊D7), …
maximal normal subgroup ofC7×D21⋊D23, D21⋊AGL(1,𝔽23), C11×D21⋊D23, …
maximal quotient ofD69⋊D49, C7×D21⋊D23, D69⋊(C7⋊D7), …

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(1932, 23);