Finite Group Databasebeta
Cayley diagram

C2×#1157 #6545

order224
isoclinismisoclinic class of Dic14
automorphismAut(G) = AGL(1,𝔽7)×#23900 (order 10752) · Inn(G) = C2×D7 · Out(G) = C3×#2403
homologyAbelianization (H1) = C24 · Schur multiplier (H2) = C25

Aliases

direct productC2×#1157

Splittings

FittingC22×C4×C7 ⋊ C2
SylowC7 ⋊ C2×#41

Subgroups

subgroupG/H
centerC2×C4C2×D7
commutator, cosocleC2×C7C24
FrattiniC2C23×D7
FittingC22×C4×C7C2
socleC22×C7C23
hypercenterC22×C4D7
hypocenterC7C2×#41
LCSG ▷ C2×C7 ▷ C7
UCSC1 ◁ C2×C4 ◁ C22×C4

164 conjugacy classes of subgroups.

Full subgroup data →

Presentation

minimal degreeμ(G) = 17
transitive degreeμt(G) = 112

A minimal faithful permutation representation — 4 generators on 17 points:

(1,2)(3,4,6,8,9,7,5)(11,15)(14,17);(10,12,13,16)(11,14,15,17);(4,5)(6,7)(8,9)(10,11)(12,14)(13,15)(16,17);(1,2)

Conjugacy classes & character table

68 conjugacy classes — view the full character table.

Relationships

maximal subgroup of#89499, #89505, #89506, …
maximal normal subgroup of#89499, #89505, #89506, …
maximal quotient ofC2×C4×Dic14, C2×#6433, #90161, …

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(224, 177);