Finite Group Databasebeta

#34116398

order20096
automorphism?
homologyAbelianization (H1) = C22×C4 · Schur multiplier (H2) = C23

Aliases

No aliases for this group.

Splittings

FittingC22×Q8×C157 ⋊ C4
SylowC157 ⋊ #2123

Subgroups

subgroupG/H
centerC2C2×#19097829
commutatorC23×C157C22×C4
FrattiniC23C22×#10597845
FittingC22×Q8×C157C4
socleC2×C157C2×#99
prime radicalC2×#14578954C22
cosocleC2×C22⋊D157C23
hypercenterC22×Q8#10597845
hypocenterC157#2123
LCSG ▷ C23×C157 ▷ C22×C157 ▷ C2×C157 ▷ C157
UCSC1 ◁ C2 ◁ C2×C4 ◁ C22×C4 ◁ C22×Q8

234 conjugacy classes of subgroups; only the 54 normal subgroups are shown.

normal subgroups only

This group has 234 conjugacy classes of subgroups — too many to draw. Only its 54 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) = 189
transitive degreeμt(G) = 5024

A minimal faithful permutation representation — 3 generators on 189 points:

(1,2,5,10,19,32,49,70,95,124,118,91,116,140,134,101,72,47,67,90,115,127,98,73,52,35,22,13,6,11,20,33,50,71,96,125,148,151,144,120,142,137,105,76,51,30,46,65,86,111,131,102,77,56,39,26,15,24,37,54,75,100,129,149,155,157,153,146,139,109,80,55,34,17,29,44,61,82,107,135,106,81,60,43,28,41,58,79,104,133,122,147,154,156,150,141,113,84,59,38,21,8,16,27,40,57,78,103,132,110,85,64,45,62,83,108,136,126,93,121,145,152,143,117,88,63,42,25,12,3,7,14,23,36,53,74,99,128,114,89,66,87,112,138,130,97,68,92,119,123,94,69,48,31,18,9,4)(158,161,163,174)(159,165,167,181)(160,169,171,172)(162,173,176,189)(164,177,178,179)(166,180,175,188)(168,182,183,186)(170,184,185,187);(158,160,163,171)(159,164,167,178)(161,172,174,169)(162,170,176,185)(165,179,181,177)(166,168,175,183)(173,187,189,184)(180,186,188,182);(2,3,4,6)(5,8,9,15)(7,12,13,11)(10,17,18,28)(14,21,22,24)(16,25,26,20)(19,30,31,45)(23,34,35,41)(27,38,39,37)(29,42,43,33)(32,47,48,66)(36,51,52,62)(40,55,56,58)(44,59,60,54)(46,63,64,50)(49,68,69,91)(53,72,73,87)(57,76,77,83)(61,80,81,79)(65,84,85,75)(67,88,89,71)(70,93,94,120)(74,97,98,116)(78,101,102,112)(82,105,106,108)(86,109,110,104)(90,113,114,100)(92,117,118,96)(95,122,123,146)(99,126,127,142)(103,130,131,140)(107,134,135,138)(111,137,132,136)(115,139,128,133)(119,141,124,129)(121,143,144,125)(145,150,151,149)(147,152,153,148)(154,156,157,155)(158,159)(160,168)(161,165)(162,175,176,166)(163,167)(164,170,178,185)(169,182)(171,183)(172,186)(173,188,189,180)(174,181)(177,184,179,187)

Polycyclic presentation:

2^7,157|a^2=e,b^2=g,c^2=g,b^a=bd,d^a=df,f^a=fg,h^a=h^129,c^b=cg,e^b=ef,e^d=eg,h^e=h^156

Conjugacy classes & character table

803 conjugacy classes — view the full character table.

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(20096, 20772);