Finite Group Databasebeta

#34204298

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

Aliases

No aliases for this group.

Splittings

SylowC79 ⋊ #12808

Subgroups

subgroupG/H
centerC4#19098537
commutatorC22×C4×C79C22×C4
FrattiniC2×#41C22×D79
FittingC79×#2932C2
socleC2×C79#1799
prime radical#532×C79C22
cosocleC2×#41×C79C23
hypercenter#2932D79
hypocenterC79#12808
LCSG ▷ C22×C4×C79 ▷ C22×C79 ▷ C2×C79 ▷ C79
UCSC1 ◁ C4 ◁ C2×C8 ◁ C2×#131 ◁ #2932

420 conjugacy classes of subgroups; only the 115 normal subgroups are shown.

normal subgroups only

This group has 420 conjugacy classes of subgroups — too many to draw. Only its 115 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)(81,87)(82,92)(84,98)(86,99)(88,102)(89,90)(91,104)(93,106)(95,103)(96,109)(100,101)(105,111);(80,82,83,93,85,92,97,106)(81,86,88,91,90,100,95,105)(84,94,96,108,98,107,109,110)(87,101,102,111,89,99,103,104);(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)(82,91)(83,95)(84,89,98,87)(85,90)(86,93)(88,97)(92,105)(94,104,107,111)(96,102,109,103)(99,110,101,108)(100,106)

Polycyclic presentation:

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

Conjugacy classes & character table

1750 conjugacy classes. The character table is too large to display.

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(20224, 85597);