Finite Group Databasebeta

#34199808

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

Aliases

No aliases for this group.

Splittings

SylowC79 ⋊ #11994

Subgroups

subgroupG/H
centerC2#23762126
commutatorC42×C79C22×C4
FrattiniC4×C8C22×D79
FittingC79×#3166C2
socleC2×C79#1558
prime radicalC23×C79#100
cosocleC4×C8×C79C23
hypercenter#3166D79
hypocenterC79#11994
LCSG ▷ C42×C79 ▷ C2×C4×C79 ▷ C2×C79 ▷ C79
UCSC1 ◁ C2 ◁ C2×C4 ◁ C4×M16 ◁ #3166

258 conjugacy classes of subgroups; only the 87 normal subgroups are shown.

normal subgroups only

This group has 258 conjugacy classes of subgroups — too many to draw. Only its 87 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 — 3 generators on 111 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)(83,96)(88,105)(93,109)(95,100)(98,107)(101,110)(103,106)(104,111);(80,82,85,92)(81,86)(83,95,96,100)(84,99,97,94)(87,91)(88,104)(89,108)(90,102)(93,98,109,107)(101,106)(103,110)(105,111);(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)(80,81,83,88,97,89,107,106,85,90,96,105,84,87,98,103)(82,91,93,104,99,102,95,110,92,108,109,111,94,86,100,101)

Polycyclic presentation:

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

Conjugacy classes & character table

1276 conjugacy classes. The character table is too large to display.

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(20224, 81107);