Finite Group Databasebeta

C4⋊#19097821 #34115293

order20096
automorphism?
homologyAbelianization (H1) = C2×C32 · Schur multiplier (H2) = C2

Aliases

unambiguous semidirect productC4⋊#19097821

Splittings

SylowC157 ⋊ C4⋊C32

Subgroups

subgroupG/H
center, FrattiniC2×C8C2×#10597845
commutatorC2×C157C2×C32
FittingC4×C8×C157C4
socle, prime radicalC22×C157C2×C16
cosocleC2×#14578929C22
hypercenterC4×C8#10597845
hypocenterC157C4⋊C32
LCSG ▷ C2×C157 ▷ C157
UCSC1 ◁ C2×C8 ◁ C4×C8

62 conjugacy classes of subgroups.

Full subgroup data →

Presentation

minimal degreeμ(G) = 193
transitive degreeμt(G) = 20096

A minimal faithful permutation representation — 2 generators on 193 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)(158,159,160,161);(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)(159,161)(162,163,164,168,165,169,172,178,166,170,173,179,175,181,184,188,167,171,174,180,176,182,185,189,177,183,186,190,187,191,192,193)

Polycyclic presentation:

2^7,157|a^2=d,b^2=c,d^2=e,e^2=f,f^2=g,b^a=bc,h^a=h^129,h^d=h^156

Conjugacy classes & character table

1328 conjugacy classes. The character table is too large to display.

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(20096, 19667);