Finite Group Databasebeta

D217⋊C4 #13181908

order1736
isoclinismisoclinic class of D7×D31
automorphism?
homologyAbelianization (H1) = C2×C4 · Schur multiplier (H2) = C2

Aliases

unambiguous semidirect productD217⋊C4

Splittings

derived, HallC7×C31 ⋊ C2×C4
SylowC31 ⋊ C4×D7
SylowC7 ⋊ C4×D31

Subgroups

subgroupG/H
center, Frattini, hypercenterC2D7×D31
commutator, hypocenterC7×C31C2×C4
Fitting, socle, cosocleC2×C7×C31C22
prime radicalC2×D217C2
LCSG ▷ C7×C31
UCSC1 ◁ C2

32 conjugacy classes of subgroups.

Full subgroup data →

Presentation

transitive degreeμt(G) = 868

Polycyclic presentation:

2^3,7,31|a^2=c,b^2=c,e^a=e^30,d^b=d^6

Conjugacy classes & character table

170 conjugacy classes — view the full character table.

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(1736, 7);