Finite Group Databasebeta

#34183220

order20224
automorphism?
homologyAbelianization (H1) = C22×C4 · Schur multiplier (H2) = C23

Aliases

No aliases for this group.

Splittings

SylowC79 ⋊ #9006

Subgroups

subgroupG/H
centerC2×C4#14579129
commutatorC42×C79C22×C4
FrattiniC2×C42C22×D79
FittingC79×#1497C2
socleC22×C79#386
prime radicalC23×C79#123
cosocleC2×C42×C79C23
hypercenter#1497D79
hypocenterC79#9006
LCSG ▷ C42×C79 ▷ C22×C79 ▷ C79
UCSC1 ◁ C2×C4 ◁ C2×C42 ◁ #1497

376 conjugacy classes of subgroups; only the 89 normal subgroups are shown.

normal subgroups only

This group has 376 conjugacy classes of subgroups — too many to draw. Only its 89 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) = 127
transitive degreeμt(G) = 10112

A minimal faithful permutation representation — 3 generators on 127 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)(80,83,85,87)(81,82,90,94)(84,91,86,95)(88,93,89,92)(96,99)(97,104)(98,108)(100,114)(101,113)(102,112)(103,116)(105,120)(106,111)(107,119)(109,125)(110,123)(115,124)(117,126)(118,127)(121,122);(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)(83,90)(84,93)(85,94)(86,92)(88,95)(89,91)(96,98,101,109,102,110,100,115)(97,103,106,117,107,118,105,121)(99,108,113,125,112,123,114,124)(104,116,111,126,119,127,120,122);(80,81,86,89,85,90,84,88)(82,91,93,87,94,95,92,83)(96,97,101,106,102,107,100,105)(98,103,109,117,110,118,115,121)(99,111,114,104,112,120,113,119)(108,122,124,127,123,126,125,116)

Polycyclic presentation:

2^8,79|a^2=f,b^2=df,c^2=g,d^2=g,e^2=gh,f^2=h,b^a=bd,c^a=ce,e^a=eg,d^b=dg,e^b=eh,f^b=fg,d^c=dh,e^c=egh,f^c=fh,i^c=i^78

Conjugacy classes & character table

1288 conjugacy classes. The character table is too large to display.

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(20224, 64519);