Finite Group Databasebeta

D87⋊D21 #20300666

order7308
automorphism?
homologyAbelianization (H1) = C22 · Schur multiplier (H2) = C2

Aliases

unambiguous semidirect productD87⋊D21

Splittings

Fitting, socle, derived, HallC32×C7×C29 ⋊ C22
HallC32×C29 ⋊ C2×D7
HallC7×C29 ⋊ D32
HallC32×C7 ⋊ C2×D29
SylowC29 ⋊ D3×D21
SylowC32 ⋊ D7×D29
SylowC7 ⋊ (C3⋊D3)⋊D29

Subgroups

subgroupG/H
center, Frattini, hypercenterC1G
commutator, Fitting, socle, hypocenterC32×C7×C29C22
LCSG ▷ C32×C7×C29
UCSC1

88 conjugacy classes of subgroups.

Full subgroup data →

Presentation

Polycyclic presentation:

2^2,3^2,7,29|d^a=d^2,f^a=f^28,c^b=c^2,d^b=d^2,e^b=e^6

Conjugacy classes & character table

498 conjugacy classes — view the full character table.

Relationships

maximal subgroup ofC5×D87⋊D21, D87⋊D105, #49141618, …
maximal normal subgroup ofC5×D87⋊D21
maximal quotient ofC5×D87⋊D21, D87⋊D105, #49141618, …

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(7308, 141);