Finite Group Databasebeta

#34203863

order20224
automorphism?
homologyAbelianization (H1) = C22×C4 · Schur multiplier (H2) = C25

Aliases

No aliases for this group.

Splittings

SylowC79 ⋊ #12721

Subgroups

subgroupG/H
centerC2#23763316
commutatorC22×C4×C79C22×C4
FrattiniC2×#41C22×D79
FittingC79×#2122C2
socleC2×C79#1782
prime radical#535×C79C22
cosocleC2×#41×C79C23
hypercenter#2122D79
hypocenterC79#12721
LCSG ▷ C22×C4×C79 ▷ C22×C79 ▷ C2×C79 ▷ C79
UCSC1 ◁ C2 ◁ C2×C4 ◁ C2×#41 ◁ #2122

694 conjugacy classes of subgroups; only the 103 normal subgroups are shown.

normal subgroups only

This group has 694 conjugacy classes of subgroups — too many to draw. Only its 103 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)(81,88,92,90)(83,99)(85,102)(87,103,105,107)(89,106,98,91)(93,104,109,108)(94,110)(96,111);(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)(81,87)(83,94)(84,101)(85,96)(86,97)(88,103)(89,93)(90,107)(91,108)(92,105)(95,100)(98,109)(99,110)(102,111)(104,106);(80,81,85,91)(82,93,96,103)(83,98,100,88)(84,90,99,89)(86,92,102,106)(87,101,104,110)(94,105,95,108)(97,109,111,107)

Polycyclic presentation:

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

Conjugacy classes & character table

931 conjugacy classes — view the full character table.

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(20224, 85162);