Finite Group Databasebeta

#34196305

order20224
automorphism?
homologyAbelianization (H1) = C22×C4 · Schur multiplier (H2) = C23×C4

Aliases

No aliases for this group.

Splittings

SylowC79 ⋊ #11229

Subgroups

subgroupG/H
centerC2×C4#14579118
commutatorC22×C4×C79C22×C4
FrattiniC23×C4C22×D79
FittingC2×H(3,ℤ/4)×C79C2
socleC22×C79#380
prime radicalC24×C79C2×D4
cosocleC23×C4×C79C23
hypercenterC2×H(3,ℤ/4)D79
hypocenterC79#11229
LCSG ▷ C22×C4×C79 ▷ C2×C79 ▷ C79
UCSC1 ◁ C2×C4 ◁ C22×M16 ◁ C2×H(3,ℤ/4)

654 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:

(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)(81,83)(84,87,88,101,90,103,89,102)(85,92,93,100,94,107,104,114)(86,96,97,111,99,113,98,112)(91,105,95,108,106,110,109,115);(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)(84,86,88,97,90,99,89,98)(85,91,93,95,94,106,104,109)(87,96,101,111,103,113,102,112)(92,105,100,108,107,110,114,115);(84,85)(86,95)(87,100,103,114)(88,104)(89,93)(90,94)(91,97)(92,102,107,101)(96,110,113,105)(98,106)(99,109)(108,112,115,111)

Polycyclic presentation:

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

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, 77604);