Finite Group Databasebeta

#34204690

order20224
automorphism?
homologyAbelianization (H1) = C22×C4 · Schur multiplier (H2) = C22

Aliases

No aliases for this group.

Splittings

SylowC79 ⋊ #12902

Subgroups

subgroupG/H
centerC8#14579157
commutatorC22×C4×C79C22×C4
FrattiniC22×C8C22×D79
FittingC79×#2151C2
socleC2×C79#1843
prime radicalC23×C79#131
cosocleC22×C8×C79C23
hypercenter#2151D79
hypocenterC79#12902
LCSG ▷ C22×C4×C79 ▷ C2×C79 ▷ C79
UCSC1 ◁ C8 ◁ C22×C8 ◁ #2151

278 conjugacy classes of subgroups; only the 119 normal subgroups are shown.

normal subgroups only

This group has 278 conjugacy classes of subgroups — too many to draw. Only its 119 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) = 143
transitive degreeμt(G) = 5056

A minimal faithful permutation representation — 3 generators on 143 points:

(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)(80,83)(81,88)(82,92,93,115)(84,98)(85,99)(86,97)(87,103,104,114)(89,109)(90,110)(91,108)(94,116,117,127)(95,96,118,121)(100,125)(101,123)(102,124)(105,128,129,138)(106,107,130,120)(111,136)(112,134)(113,135)(119,122,139,132)(126,141)(131,133,142,140)(137,143);(1,2,4,6,8,10,12,14,16,18,20,22,24,26,28,30,32,34,36,38,40,42,44,46,48,50,52,54,56,58,60,62,64,66,68,70,72,74,76,78,79,77,75,73,71,69,67,65,63,61,59,57,55,53,51,49,47,45,43,41,39,37,35,33,31,29,27,25,23,21,19,17,15,13,11,9,7,5,3)(80,82)(81,87)(83,96,97,121)(84,94)(85,95)(86,93)(88,107,108,120)(89,105)(90,106)(91,104)(92,99,115,124)(98,122,123,132)(100,119)(101,117)(102,118)(103,110,114,135)(109,133,134,140)(111,131)(112,129)(113,130)(116,125,127,141)(126,139)(128,136,138,143)(137,142);(80,81,84,89,85,90,100,111,86,91,101,112,102,113,126,137)(82,87,94,105,95,106,119,131,93,104,117,129,118,130,139,142)(83,88,98,109,99,110,125,136,97,108,123,134,124,135,141,143)(92,114,116,138,96,120,122,140,115,103,127,128,121,107,132,133)

Polycyclic presentation:

2^8,79|a^2=f,b^2=d,c^2=e,f^2=g,g^2=h,b^a=bd,c^a=ce,c^b=cg,e^b=eh,d^c=dh,i^c=i^78

Conjugacy classes & character table

2236 conjugacy classes. The character table is too large to display.

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(20224, 85989);