Finite Group Databasebeta

#34200073

order20224
automorphism?
homologyAbelianization (H1) = C22×C8 · Schur multiplier (H2) = C2

Aliases

No aliases for this group.

Splittings

SylowC79 ⋊ #12054

Subgroups

subgroupG/H
centerC2×C8C2×C22⋊D79
commutatorC2×C4×C79C22×C8
FrattiniC4×C8C22×D79
FittingC79×#2183C2
socle, prime radicalC22×C79C8×D4
cosocleC4×C8×C79C23
hypercenter#2183D79
hypocenterC79#12054
LCSG ▷ C2×C4×C79 ▷ C2×C79 ▷ C79
UCSC1 ◁ C2×C8 ◁ C4×C16 ◁ #2183

206 conjugacy classes of subgroups; only the 89 normal subgroups are shown.

normal subgroups only

This group has 206 conjugacy classes of subgroups — too many to draw. Only its 89 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) = 20224

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

Polycyclic presentation:

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

Conjugacy classes & character table

2272 conjugacy classes. The character table is too large to display.

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(20224, 81372);