Finite Group Databasebeta

#34175451

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

Aliases

No aliases for this group.

Splittings

SylowC79 ⋊ #7272

Subgroups

subgroupG/H
centerC4#19098311
commutatorC42×C79C42
FrattiniC2×C4×C8C2×D79
FittingC2×#364×C79C2
socleC2×C79#1296
prime radicalC23×C79#101
cosocleC2×C4×C8×C79C22
hypercenterC2×#364D79
hypocenterC79#7272
LCSG ▷ C42×C79 ▷ C2×C4×C79 ▷ C2×C79 ▷ C79
UCSC1 ◁ C4 ◁ C22×C4 ◁ C2×C4×C8 ◁ C2×#364

208 conjugacy classes of subgroups.

Full subgroup data →

Presentation

minimal degreeμ(G) = 111
transitive degreeμt(G) = 2528

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

Polycyclic presentation:

2^8,79|a^2=d,b^2=e,c^2=fh,d^2=h,e^2=fg,g^2=h,b^a=bc,c^a=cf,e^a=efgh,g^a=gh,i^a=i^78,c^b=cg,d^b=dh,f^b=fh,g^b=gh

Conjugacy classes & character table

2230 conjugacy classes. The character table is too large to display.

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(20224, 56750);