Finite Group Databasebeta

C2×D137 #10587740

order548
isoclinismisoclinic class of D137
automorphism?
homologyAbelianization (H1) = C22 · Schur multiplier (H2) = C2

Aliases

dihedralD274
direct productC2×D137
unambiguous semidirect productC137⋊C22
unambiguous semidirect product(C2×C137)⋊C2

Splittings

Fitting, socleC2×C137 ⋊ C2
derived, SylowC137 ⋊ C22

Subgroups

subgroupG/H
center, hypercenterC2D137
commutator, cosocle, hypocenterC137C22
FrattiniC1G
Fitting, socleC2×C137C2
LCSG ▷ C137
UCSC1 ◁ C2

10 conjugacy classes of subgroups.

Full subgroup data →

Presentation

minimal degreeμ(G) = 139
transitive degreeμt(G) = 274

A minimal faithful permutation representation — 2 generators on 139 points:

(1,2)(3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128,129,130,131,132,133,134,135,136,137,138,139);(4,139)(5,138)(6,137)(7,136)(8,135)(9,134)(10,133)(11,132)(12,131)(13,130)(14,129)(15,128)(16,127)(17,126)(18,125)(19,124)(20,123)(21,122)(22,121)(23,120)(24,119)(25,118)(26,117)(27,116)(28,115)(29,114)(30,113)(31,112)(32,111)(33,110)(34,109)(35,108)(36,107)(37,106)(38,105)(39,104)(40,103)(41,102)(42,101)(43,100)(44,99)(45,98)(46,97)(47,96)(48,95)(49,94)(50,93)(51,92)(52,91)(53,90)(54,89)(55,88)(56,87)(57,86)(58,85)(59,84)(60,83)(61,82)(62,81)(63,80)(64,79)(65,78)(66,77)(67,76)(68,75)(69,74)(70,73)(71,72)

Conjugacy classes & character table

140 conjugacy classes — view the full character table.

Relationships

maximal subgroup ofC4×D137, C22⋊D137, D548, …
maximal normal subgroup ofC4×D137, C22⋊D137, D548, …
maximal quotient ofC4×D137, C2×Dic137, C22⋊D137, …

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(548, 4);