Finite Group Databasebeta

#34203426

order20224
automorphism?
homologyAbelianization (H1) = C2×C42 · Schur multiplier (H2) = C22×C4

Aliases

No aliases for this group.

Splittings

SylowC79 ⋊ #12624

Subgroups

subgroupG/H
centerC4C2×#14579076
commutatorC23×C79C2×C42
FrattiniC2×#41C22×D79
FittingC79×#2930C2
socleC2×C79C4×#99
prime radical#525×C79C22
cosocleC2×#41×C79C23
hypercenter#2930D79
hypocenterC79#12624
LCSG ▷ C23×C79 ▷ C22×C79 ▷ C2×C79 ▷ C79
UCSC1 ◁ C4 ◁ C2×C8 ◁ C2×#131 ◁ #2930

456 conjugacy classes of subgroups; only the 131 normal subgroups are shown.

normal subgroups only

This group has 456 conjugacy classes of subgroups — too many to draw. Only its 131 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)(80,83,84,89,86,96,98,81)(82,91,93,90,92,103,100,87)(85,95,97,102,99,108,109,88)(94,105,107,104,106,111,110,101);(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)(80,82,85,94)(81,87,88,101)(83,91,95,105)(84,93,97,107)(86,92,99,106)(89,90,102,104)(96,103,108,111)(98,100,109,110);(80,81,84,83,86,89,98,96)(82,90,93,103,92,87,100,91)(85,88,97,95,99,102,109,108)(94,101,107,105,106,104,110,111)

Polycyclic presentation:

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

Conjugacy classes & character table

1762 conjugacy classes. The character table is too large to display.

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(20224, 84725);