Finite Group Databasebeta

#34175981

order20224
automorphism?
homologyAbelianization (H1) = C42 · Schur multiplier (H2) = C22

Aliases

No aliases for this group.

Splittings

SylowC79 ⋊ #7476

Subgroups

subgroupG/H
centerC4#19098390
commutatorC16×C79C42
FrattiniC22×C16C2×D79
FittingC2×#368×C79C2
socleC2×C79#1380
prime radicalC23×C79Q32
cosocleC22×C16×C79C22
hypercenterC2×#368D79
hypocenterC79#7476
LCSG ▷ C16×C79 ▷ C8×C79 ▷ C4×C79 ▷ C2×C79 ▷ C79
UCSC1 ◁ C4 ◁ C22×C4 ◁ C22×C8 ◁ C22×C16 ◁ C2×#368

162 conjugacy classes of subgroups; only the 91 normal subgroups are shown.

normal subgroups only

This group has 162 conjugacy classes of subgroups — too many to draw. Only its 91 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 — 2 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)(80,82,85,98,109,137,102,114,84,106,107,140,112,135,105,133,88,100,103,132,86,99,104,131,87,97,110,134,101,130,83,96)(81,89,92,116,123,142,121,128,113,115,139,141,111,136,90,95,94,119,125,143,93,117,124,127,91,118,122,138,120,126,108,129);(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)(80,81,84,91,88,94,87,113)(82,95,97,127,100,129,106,128)(83,92,102,122,105,125,104,139)(85,108,107,124,103,90,110,121)(86,111,101,123,109,120,112,93)(89,114,115,96,119,131,118,133)(98,136,134,117,132,126,140,142)(99,138,135,116,137,141,130,143)

Polycyclic presentation:

2^8,79|a^2=d,b^2=e,c^2=fgh,d^2=h,e^2=fh,f^2=gh,g^2=h,b^a=bc,c^a=cf,e^a=efgh,f^a=fg,g^a=gh,d^b=dh,i^b=i^78

Conjugacy classes & character table

1768 conjugacy classes. The character table is too large to display.

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(20224, 57280);