Finite Group Databasebeta

#34197792

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

Aliases

No aliases for this group.

Splittings

FittingC79×#1317 ⋊ C2
SylowC79 ⋊ #11543

Subgroups

subgroupG/H
centerC22#99×D79
commutatorC24×C79C22×C4
FrattiniC2×C22⋊C4C22×D79
FittingC79×#1317C2
socleC22×C79C2×#99
prime radicalC24×D79C2×C4
cosocleC2×C22⋊C4×C79C23
hypercenter#1317D79
hypocenterC79#11543
LCSG ▷ C24×C79 ▷ C22×C79 ▷ C2×C79 ▷ C79
UCSC1 ◁ C22 ◁ C23 ◁ C2×C22⋊C4 ◁ #1317

492 conjugacy classes of subgroups; only the 71 normal subgroups are shown.

normal subgroups only

This group has 492 conjugacy classes of subgroups — too many to draw. Only its 71 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:

(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)(98,106)(101,109)(105,110)(107,111);(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)(80,82,84,90)(81,85,87,93)(83,89,92,95)(86,88,91,94)(96,98,100,106)(97,101,104,109)(99,107,108,111)(102,105,103,110);(80,81)(82,88)(83,91,92,86)(84,87)(85,89,93,95)(90,94)(96,97,99,103,100,104,108,102)(98,105,107,109,106,110,111,101)

Polycyclic presentation:

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

Conjugacy classes & character table

1051 conjugacy classes. The character table is too large to display.

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(20224, 79091);