Finite Group Databasebeta

#34175060

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

Aliases

No aliases for this group.

Splittings

SylowC79 ⋊ #7121

Subgroups

subgroupG/H
centerC23#14579082
commutatorC2×C8×C79C2×C8
FrattiniC2×C4×C8C2×D79
FittingC79×#1942C2
socle, prime radicalC23×C79#102
cosocleC2×C4×C8×C79C22
hypercenter#1942D79
hypocenterC79#7121
LCSG ▷ C2×C8×C79 ▷ C2×C4×C79 ▷ C2×C79 ▷ C79
UCSC1 ◁ C23 ◁ C2×C42 ◁ C2×C4×C8 ◁ #1942

222 conjugacy classes of subgroups; only the 91 normal subgroups are shown.

normal subgroups only

This group has 222 conjugacy classes of subgroups — too many to draw. Only its 91 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 — 2 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)(88,90,91,95)(89,92,93,94)(97,102)(98,107)(99,109)(101,108)(103,105)(104,110)(106,111);(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)(80,81,82,84,83,85,86,87)(88,89)(90,94,95,92)(91,93)(96,97,99,102,101,105,98,106,100,104,107,110,108,111,109,103)

Polycyclic presentation:

2^8,79|a^2=d,b^2=eh,c^2=fh,d^2=g,f^2=h,g^2=h,b^a=bc,c^a=ce,i^a=i^78,c^b=cf,d^b=def,f^b=fh,g^b=gh

Conjugacy classes & character table

1774 conjugacy classes. The character table is too large to display.

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(20224, 56359);