Finite Group Databasebeta

#34203552

order20224
automorphism?
homologyAbelianization (H1) = C2×C42 · Schur multiplier (H2) = C22×C4

Aliases

No aliases for this group.

Splittings

FittingC79×#1384 ⋊ C2
SylowC79 ⋊ #12649

Subgroups

subgroupG/H
centerC4#19098674
commutatorC8×C79C2×C42
FrattiniC22×C8C22×D79
FittingC79×#1384C2
socleC2×C79#1762
prime radicalC2×#14579183C22
cosocleC22×C8×C79C23
hypercenter#1384D79
hypocenterC79#12649
LCSG ▷ C8×C79 ▷ C4×C79 ▷ C2×C79 ▷ C79
UCSC1 ◁ C4 ◁ C22×C4 ◁ C22×C8 ◁ #1384

428 conjugacy classes of subgroups; only the 123 normal subgroups are shown.

normal subgroups only

This group has 428 conjugacy classes of subgroups — too many to draw. Only its 123 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)(82,93,95,97)(83,98)(84,99)(87,103,104,106)(88,100)(89,107)(92,105,108,111)(94,110,109,96);(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)(80,82,84,96,101,93,98,109,86,95,99,110,85,97,83,94)(81,87,89,105,102,103,88,92,91,104,107,111,90,106,100,108);(80,81)(82,92,95,108)(83,89)(84,100)(85,102)(86,91)(87,94,104,109)(88,99)(90,101)(93,105,97,111)(96,103,110,106)(98,107)

Polycyclic presentation:

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

Conjugacy classes & character table

1294 conjugacy classes. The character table is too large to display.

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(20224, 84851);