Finite Group Databasebeta

D21⋊(C3⋊D3) #10625545

order756
isoclinismisoclinic class of D21⋊(C3⋊D3)
automorphism?
homologyAbelianization (H1) = C22 · Schur multiplier (H2) = C2×C3

Aliases

unambiguous semidirect productD21⋊(C3⋊D3)
unambiguous semidirect product(C3⋊(C3⋊D3))⋊D7

Splittings

Fitting, socle, derived, HallC33×C7 ⋊ C22
SylowC33 ⋊ C2×D7
SylowC7 ⋊ D3×C3⋊D3

Subgroups

subgroupG/H
center, Frattini, hypercenterC1G
commutator, Fitting, socle, cosocle, hypocenterC33×C7C22
LCSG ▷ C33×C7
UCSC1

152 conjugacy classes of subgroups.

Full subgroup data →

Presentation

transitive degreeμt(G) = 126

Polycyclic presentation:

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

Conjugacy classes & character table

63 conjugacy classes — view the full character table.

Relationships

maximal subgroup ofD3×D7×C3⋊D3, D3×(C3⋊D3)⋊D7, C2×D21⋊(C3⋊D3), …
maximal normal subgroup ofD3×D7×C3⋊D3, D3×(C3⋊D3)⋊D7, C2×D21⋊(C3⋊D3), …
maximal quotient of#13094824, #13094825, D21⋊(C3⋊Dic3), …

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(756, 176);