Finite Group Databasebeta

D21×D25 #14523548

order2100
isoclinismisoclinic class of D21×D25
automorphism?
homologyAbelianization (H1) = C22 · Schur multiplier (H2) = C2

Aliases

direct productD21×D25
unambiguous semidirect product(C3×D25)⋊D7
unambiguous semidirect product(C7×D25)⋊D3

Splittings

Fitting, derived, HallC3×C7×C25 ⋊ C22
HallC7×C25 ⋊ C2×D3
HallC3×C25 ⋊ C2×D7
SylowC25 ⋊ C2×D21
HallC3×C7 ⋊ C2×D25
SylowC7 ⋊ D3×D25
SylowC3 ⋊ D7×D25

Subgroups

subgroupG/H
center, hypercenterC1G
commutator, Fitting, cosocle, hypocenterC3×C7×C25C22
FrattiniC5D5×D21
socleC3×C5×C7C2×D5
LCSG ▷ C3×C7×C25
UCSC1

60 conjugacy classes of subgroups.

Full subgroup data →

Presentation

minimal degreeμ(G) = 35
transitive degreeμt(G) = 525

Conjugacy classes & character table

168 conjugacy classes — view the full character table.

Relationships

maximal subgroup ofD25×D147, C7×D21×D25, D25×C3⋊(C7⋊D7), …
maximal normal subgroup ofC7×D21×D25, C11×D21×D25, C13×D21×D25, …
maximal quotient ofD25×D147, C7×D21×D25, D25×C3⋊(C7⋊D7), …

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(2100, 28);