Finite Group Databasebeta

#34195037

order20224
automorphism?
homologyAbelianization (H1) = C22×C4 · Schur multiplier (H2) = C26

Aliases

No aliases for this group.

Splittings

FittingC2×#421×C79 ⋊ C2
SylowC79 ⋊ #11018

Subgroups

subgroupG/H
centerC2×C4#14579129
commutatorC22×C4×C79C22×C4
FrattiniC23×C4C22×D79
FittingC2×#421×C79C2
socleC22×C79#386
prime radicalC2×#19099361C2
cosocleC23×C4×C79C23
hypercenterC2×#421D79
hypocenterC79#11018
LCSG ▷ C22×C4×C79 ▷ C2×C79 ▷ C79
UCSC1 ◁ C2×C4 ◁ C23×C4 ◁ C2×#421

1270 conjugacy classes of subgroups.

Full subgroup data →

Presentation

minimal degreeμ(G) = 115
transitive degreeμt(G) = 5056

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

Polycyclic presentation:

2^8,79|a^2=g,d^2=h,f^2=h,g^2=h,b^a=bd,c^a=ce,d^a=dh,c^b=cf,d^b=dh,f^b=fh,f^c=fh,i^c=i^78

Conjugacy classes & character table

1768 conjugacy classes. The character table is too large to display.

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(20224, 76336);