Finite Group Databasebeta

D21⋊D187 #30628165

order15708
automorphism?
homologyAbelianization (H1) = C22 · Schur multiplier (H2) = C2

Aliases

unambiguous semidirect productD21⋊D187

Splittings

Fitting, socle, derived, HallC3×C7×C11×C17 ⋊ C22
HallC7×C11×C17 ⋊ C2×D3
HallC3×C11×C17 ⋊ C2×D7
HallC3×C7×C17 ⋊ C2×D11
HallC3×C7×C11 ⋊ C2×D17
HallC11×C17 ⋊ D3×D7
HallC7×C17 ⋊ D3×D11
HallC7×C11 ⋊ D3×D17
HallC3×C17 ⋊ D7×D11
HallC3×C11 ⋊ D7×D17
HallC3×C7 ⋊ C2×D187
SylowC17 ⋊ D21⋊D11
SylowC11 ⋊ D21⋊D17
SylowC7 ⋊ D3×D187
SylowC3 ⋊ D7×D187

Subgroups

subgroupG/H
center, Frattini, hypercenterC1G
commutator, Fitting, socle, cosocle, hypocenterC3×C7×C11×C17C22
LCSG ▷ C3×C7×C11×C17
UCSC1

80 conjugacy classes of subgroups.

Full subgroup data →

Presentation

transitive degreeμt(G) = 3927

Polycyclic presentation:

2^2,3,7,11,17|d^a=d^6,e^a=e^10,f^a=f^16,c^b=c^2,d^b=d^6

Conjugacy classes & character table

1131 conjugacy classes. The character table is too large to display.

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(15708, 86);