Finite Group Databasebeta
Cayley diagram

C2×C5×Dic10 #87887

order400
isoclinismisoclinic class of Dic10
automorphism?
homologyAbelianization (H1) = C23×C5 · Schur multiplier (H2) = C22

Aliases

direct productC2×C5×Dic10
unambiguous semidirect product(C2×C5)⋊(C5×Q8)

Splittings

SylowC52 ⋊ C2×Q8

Subgroups

subgroupG/H
centerC22×C5C2×D5
commutator, cosocleC2×C5C23×C5
FrattiniC2C22×C5×D5
FittingC2×C4×C52C2
socle, prime radicalC22×C52C22
hypercenterC2×C4×C5D5
hypocenterC5C2×C5×Q8
LCSG ▷ C2×C5 ▷ C5
UCSC1 ◁ C22×C5 ◁ C2×C4×C5

92 conjugacy classes of subgroups.

Full subgroup data →

Presentation

minimal degreeμ(G) = 20
transitive degreeμt(G) = 80

A minimal faithful permutation representation — 3 generators on 20 points:

(3,4,6,7,5)(8,9,10,11,12)(13,15,16,20)(14,17,18,19);(1,2)(4,5)(6,7)(13,14,16,18)(15,19,20,17);(1,2)

Conjugacy classes & character table

130 conjugacy classes — view the full character table.

Relationships

maximal subgroup of#11716601, #11716606, #11716607, …
maximal normal subgroup of#11716601, #11716606, #11716607, …
maximal quotient ofC4×C5×Dic10, C5×#4015, C5×#4016, …

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(400, 181);