Finite Group Databasebeta

#34175332

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

Aliases

No aliases for this group.

Splittings

SylowC79 ⋊ #7226

Subgroups

subgroupG/H
centerC4#19098319
commutatorC2×C8×C79C42
FrattiniC4×M16C2×D79
FittingC79×#1841C2
socleC2×C79#1288
prime radicalC23×C79#104
cosocleC4×M16×C79C22
hypercenter#1841D79
hypocenterC79#7226
LCSG ▷ C2×C8×C79 ▷ C4×C79 ▷ C79
UCSC1 ◁ C4 ◁ C2×C8 ◁ #1841

180 conjugacy classes of subgroups; only the 59 normal subgroups are shown.

normal subgroups only

This group has 180 conjugacy classes of subgroups — too many to draw. Only its 59 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) = 111
transitive degreeμt(G) = 2528

A minimal faithful permutation representation — 2 generators on 111 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)(81,86,88,98,89,99,100,102)(83,91)(84,93)(85,92)(87,90,94,104,101,103,108,111)(95,106)(96,105)(97,107)(109,110);(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)(82,90,92,103)(83,94,95,108)(84,88)(85,89)(86,91)(87,96,101,109)(93,104,107,111)(97,100)(98,105)(99,106)(102,110)

Polycyclic presentation:

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

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, 56631);