Finite Group Databasebeta

#34175366

order20224
automorphism?
homologyAbelianization (H1) = C42 · Schur multiplier (H2) = C2

Aliases

No aliases for this group.

Splittings

SylowC79 ⋊ #7240

Subgroups

subgroupG/H
centerC4#19098320
commutatorC2×C8×C79C42
Frattini#405C2×D79
FittingC79×#2151C2
socleC2×C79#1290
prime radicalC23×C79#108
cosocle#405×C79C22
hypercenter#2151D79
hypocenterC79#7240
LCSG ▷ C2×C8×C79 ▷ C4×C79 ▷ C79
UCSC1 ◁ C4 ◁ C2×C8 ◁ #2151

148 conjugacy classes of subgroups; only the 63 normal subgroups are shown.

normal subgroups only

This group has 148 conjugacy classes of subgroups — too many to draw. Only its 63 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:

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

Polycyclic presentation:

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

Conjugacy classes & character table

2224 conjugacy classes. The character table is too large to display.

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(20224, 56665);