Finite Group Databasebeta

D247⋊D21 #35209154

order20748
automorphism?
homologyAbelianization (H1) = C22 · Schur multiplier (H2) = C2

Aliases

unambiguous semidirect productD247⋊D21

Splittings

Fitting, socle, derived, HallC3×C7×C13×C19 ⋊ C22
HallC7×C13×C19 ⋊ C2×D3
HallC3×C13×C19 ⋊ C2×D7
HallC3×C7×C19 ⋊ C2×D13
HallC3×C7×C13 ⋊ C2×D19
HallC13×C19 ⋊ C2×D21
HallC7×C19 ⋊ D3×D13
HallC7×C13 ⋊ D3×D19
HallC3×C19 ⋊ D7×D13
HallC3×C13 ⋊ D7×D19
HallC3×C7 ⋊ D13×D19
SylowC19 ⋊ D13×D21
SylowC13 ⋊ D19×D21
SylowC7 ⋊ D39⋊D19
SylowC3 ⋊ D91⋊D19

Subgroups

subgroupG/H
center, Frattini, hypercenterC1G
commutator, Fitting, socle, cosocle, hypocenterC3×C7×C13×C19C22
LCSG ▷ C3×C7×C13×C19
UCSC1

80 conjugacy classes of subgroups.

Full subgroup data →

Presentation

transitive degreeμt(G) = 5187

Polycyclic presentation:

2^2,3,7,13,19|e^a=e^12,f^a=f^18,c^b=c^2,d^b=d^6,e^b=e^12

Conjugacy classes & character table

1338 conjugacy classes. The character table is too large to display.

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(20748, 382);