Finite Group Databasebeta

#34199451

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

Aliases

No aliases for this group.

Splittings

SylowC79 ⋊ #11912

Subgroups

subgroupG/H
centerC2#23762011
commutatorC42×C79C22×C4
Frattini#97C22×D79
FittingC79×#3174C2
socleC2×C79#1530
prime radical#540×C79C4
cosocle#97×C79C23
hypercenter#3174D79
hypocenterC79#11912
LCSG ▷ C42×C79 ▷ C2×C4×C79 ▷ C2×C79 ▷ C79
UCSC1 ◁ C2 ◁ C2×C4 ◁ #405 ◁ #3174

284 conjugacy classes of subgroups; only the 83 normal subgroups are shown.

normal subgroups only

This group has 284 conjugacy classes of subgroups — too many to draw. Only its 83 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) = 2528

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

Polycyclic presentation:

2^8,79|a^2=e,c^2=g,d^2=g,e^2=f,f^2=h,b^a=bd,c^a=cf,d^a=df,g^a=gh,i^a=i^78,d^b=dg,e^b=efgh,f^b=fh,d^c=dh,e^c=eh,e^d=eh

Conjugacy classes & character table

1282 conjugacy classes. The character table is too large to display.

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(20224, 80750);