Finite Group Databasebeta

C2×D5457 #36345672

order21828
automorphism?
homologyAbelianization (H1) = C22 · Schur multiplier (H2) = C2

Aliases

dihedralD10914
direct productC2×D5457
unambiguous semidirect product(C2×C3)⋊D1819
unambiguous semidirect product(C2×C17)⋊D321
unambiguous semidirect product(C2×C107)⋊D51

Splittings

Fitting, socleC2×C3×C17×C107 ⋊ C2
derived, HallC3×C17×C107 ⋊ C22
HallC17×C107 ⋊ C2×D3
HallC3×C107 ⋊ C2×D17
SylowC107 ⋊ C2×D51
HallC3×C17 ⋊ C2×D107
SylowC17 ⋊ C2×D321
SylowC3 ⋊ C2×D1819

Subgroups

subgroupG/H
center, hypercenterC2D5457
commutator, cosocle, hypocenterC3×C17×C107C22
FrattiniC1G
Fitting, socleC2×C3×C17×C107C2
LCSG ▷ C3×C17×C107
UCSC1 ◁ C2

40 conjugacy classes of subgroups.

Full subgroup data →

Presentation

minimal degreeμ(G) = 129
transitive degreeμt(G) = 10914

A minimal faithful permutation representation — 2 generators on 129 points:

(1,2)(3,4,5)(6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22)(23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128,129);(4,5)(7,22)(8,21)(9,20)(10,19)(11,18)(12,17)(13,16)(14,15)(24,129)(25,128)(26,127)(27,126)(28,125)(29,124)(30,123)(31,122)(32,121)(33,120)(34,119)(35,118)(36,117)(37,116)(38,115)(39,114)(40,113)(41,112)(42,111)(43,110)(44,109)(45,108)(46,107)(47,106)(48,105)(49,104)(50,103)(51,102)(52,101)(53,100)(54,99)(55,98)(56,97)(57,96)(58,95)(59,94)(60,93)(61,92)(62,91)(63,90)(64,89)(65,88)(66,87)(67,86)(68,85)(69,84)(70,83)(71,82)(72,81)(73,80)(74,79)(75,78)(76,77)

Conjugacy classes & character table

5460 conjugacy classes. The character table is too large to display.

Relationships

maximal subgroup ofD21828, C2×D16371
maximal normal subgroup ofD21828
maximal quotient ofDic10914, D21828, C2×D16371

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(21828, 28);