Finite Group Databasebeta
Cayley diagram

C2×D101 #87939

order404
isoclinismisoclinic class of D101
automorphism?
homologyAbelianization (H1) = C22 · Schur multiplier (H2) = C2

Aliases

dihedralD202
direct productC2×D101
unambiguous semidirect productC101⋊C22
unambiguous semidirect product(C2×C101)⋊C2

Splittings

Fitting, socleC2×C101 ⋊ C2
derived, SylowC101 ⋊ C22

Subgroups

subgroupG/H
center, hypercenterC2D101
commutator, cosocle, hypocenterC101C22
FrattiniC1G
Fitting, socleC2×C101C2
LCSG ▷ C101
UCSC1 ◁ C2

10 conjugacy classes of subgroups.

Full subgroup data →

Presentation

minimal degreeμ(G) = 103
transitive degreeμt(G) = 202

A minimal faithful permutation representation — 2 generators on 103 points:

(1,2)(3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103);(4,103)(5,102)(6,101)(7,100)(8,99)(9,98)(10,97)(11,96)(12,95)(13,94)(14,93)(15,92)(16,91)(17,90)(18,89)(19,88)(20,87)(21,86)(22,85)(23,84)(24,83)(25,82)(26,81)(27,80)(28,79)(29,78)(30,77)(31,76)(32,75)(33,74)(34,73)(35,72)(36,71)(37,70)(38,69)(39,68)(40,67)(41,66)(42,65)(43,64)(44,63)(45,62)(46,61)(47,60)(48,59)(49,58)(50,57)(51,56)(52,55)(53,54)

Conjugacy classes & character table

104 conjugacy classes — view the full character table.

Relationships

maximal subgroup ofC4×D101, D404, C22⋊D101, …
maximal normal subgroup ofC4×D101, D404, C22⋊D101, …
maximal quotient ofDic202, C4×D101, D404, …

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(404, 4);