Finite Group Databasebeta
Cayley diagram

C2×C4×D20 #65807

order320
isoclinismisoclinic class of Dic10
automorphism?
homologyAbelianization (H1) = C23×C4 · Schur multiplier (H2) = C26

Aliases

direct productC2×C4×D20

Splittings

FittingC2×C42×C5 ⋊ C2
SylowC5 ⋊ C2×C4×D4

Subgroups

subgroupG/H
centerC22×C4C2×D5
commutatorC2×C5C23×C4
FrattiniC22C23×D5
FittingC2×C42×C5C2
socleC23×C5C23
prime radicalC22×D20C2
cosocleC22×C5C24
hypercenterC2×C42D5
hypocenterC5C2×C4×D4
LCSG ▷ C2×C5 ▷ C5
UCSC1 ◁ C22×C4 ◁ C2×C42

426 conjugacy classes of subgroups; only the 183 normal subgroups are shown.

normal subgroups only

This group has 426 conjugacy classes of subgroups — too many to draw. Only its 183 normal subgroups are shown.

Dotted edges: containments with no intermediate normal subgroup — omitted non-normal subgroups may lie between.

Full subgroup data →

Presentation

minimal degreeμ(G) = 15
transitive degreeμt(G) = 160

A minimal faithful permutation representation — 4 generators on 15 points:

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

Conjugacy classes & character table

104 conjugacy classes — view the full character table.

Relationships

maximal subgroup of#10599461, #10599462, #10599463, …
maximal normal subgroup of#10599461, #10599462, #10599463, …
maximal quotient ofC42×D20, #10605030, C4×#4021, …

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(320, 1145);