Finite Group Databasebeta

#34208776

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

Aliases

No aliases for this group.

Splittings

SylowC79 ⋊ #13634

Subgroups

subgroupG/H
centerC22C2×D1264
commutatorC16×C79C22×C4
FrattiniC2×C16C22×D79
FittingC2×M64×C79C2
socleC22×C79C2×D16
prime radicalC23×C79D16
cosocleC2×C16×C79C23
hypercenterC2×M64D79
hypocenterC79#13634
LCSG ▷ C16×C79 ▷ C8×C79 ▷ C4×C79 ▷ C2×C79 ▷ C79
UCSC1 ◁ C22 ◁ C22×C4 ◁ C22×C8 ◁ C22×C16 ◁ C2×M64

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

normal subgroups only

This group has 194 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) = 115
transitive degreeμt(G) = 10112

A minimal faithful permutation representation — 3 generators on 115 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)(85,92)(90,100)(93,107)(94,108)(101,113)(102,114)(103,110)(109,115);(84,85,91,102,87,93,104,110,98,108,112,115,111,113,97,100,89,92,106,114,99,107,96,103,88,94,105,109,95,101,86,90);(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)(80,81,82,83)(85,90)(86,91)(87,95)(88,98)(92,100)(93,109)(94,110)(96,112)(97,106)(99,111)(101,102)(103,108)(104,105)(107,115)(113,114)

Polycyclic presentation:

2^8,79|a^2=e,b^2=df,d^2=fg,f^2=gh,g^2=h,b^a=bd,d^a=df,f^a=fg,g^a=gh,i^a=i^78,c^b=ch

Conjugacy classes & character table

3172 conjugacy classes. The character table is too large to display.

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(20224, 90075);