Finite Group Databasebeta

#34203879

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

Aliases

No aliases for this group.

Splittings

SylowC79 ⋊ #12724

Subgroups

subgroupG/H
centerC2#23763317
commutatorC22×C4×C79C22×C4
FrattiniC2×#41C22×D79
FittingC79×#1827C2
socleC2×C79#1782
prime radical, cosocleC2×#41×C79C23
hypercenter#1827D79
hypocenterC79#12724
LCSG ▷ C22×C4×C79 ▷ C22×C79 ▷ C2×C79 ▷ C79
UCSC1 ◁ C2 ◁ C2×C4 ◁ C4×#41 ◁ #1827

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

normal subgroups only

This group has 670 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:

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

Polycyclic presentation:

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

Conjugacy classes & character table

1282 conjugacy classes. The character table is too large to display.

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(20224, 85178);