Finite Group Databasebeta

D21⋊D417 #46856166

order35028
automorphism?
homologyAbelianization (H1) = C22 · Schur multiplier (H2) = C2

Aliases

unambiguous semidirect productD21⋊D417

Splittings

Fitting, socle, derived, HallC32×C7×C139 ⋊ C22
HallC32×C139 ⋊ C2×D7
HallC7×C139 ⋊ D32
SylowC139 ⋊ (C3⋊D3)⋊D7
HallC32×C7 ⋊ C2×D139
SylowC32 ⋊ D7×D139
SylowC7 ⋊ D3×D417

Subgroups

subgroupG/H
center, Frattini, hypercenterC1G
commutator, Fitting, socle, cosocle, hypocenterC32×C7×C139C22
LCSG ▷ C32×C7×C139
UCSC1

88 conjugacy classes of subgroups.

Full subgroup data →

Presentation

transitive degreeμt(G) = 5838

Polycyclic presentation:

2^2,3^2,7,139|c^a=c^2,d^a=d^2,f^a=f^138,d^b=d^2,e^b=e^6

Conjugacy classes & character table

2511 conjugacy classes. The character table is too large to display.

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(35028, 202);