Finite Group Databasebeta

C5×Dic84 #13132325

order1680
isoclinismisoclinic class of #66623
automorphism?
homologyAbelianization (H1) = C22×C5 · Schur multiplier (H2) = C1

Aliases

direct productC5×Dic84

Splittings

HallC3×C5×C7 ⋊ Q16
HallC5×C7 ⋊ Dic12
HallC3×C7 ⋊ C5×Q16
HallC3×C5 ⋊ Dic28
SylowC7 ⋊ C5×Dic12
SylowC3 ⋊ C5×Dic28

Subgroups

subgroupG/H
centerC2×C5D84
commutator, cosocleC3×C4×C7C22×C5
FrattiniC4C2×C5×D21
FittingC3×C5×C7×C8C2
socle, prime radicalC2×C3×C5×C7D4
hypercenterC5×C8D21
hypocenterC3×C7C5×Q16
LCSG ▷ C3×C4×C7 ▷ C2×C3×C7 ▷ C3×C7
UCSC1 ◁ C2×C5 ◁ C4×C5 ◁ C5×C8

72 conjugacy classes of subgroups.

Full subgroup data →

Presentation

minimal degreeμ(G) = 31
transitive degreeμt(G) = 1680

A minimal faithful permutation representation — 2 generators on 31 points:

(1,2,3,4,5)(6,7,8,9,10,11,12,13)(14,21,20,19,18,17,16,15)(22,23,24)(25,26,27,28,29,30,31);(6,14,10,18)(7,15,11,19)(8,16,12,20)(9,17,13,21)(23,24)(26,31)(27,30)(28,29)

Conjugacy classes & character table

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

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(1680, 345);