Finite Group Databasebeta

#34206905

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

Aliases

No aliases for this group.

Splittings

SylowC79 ⋊ #13291

Subgroups

subgroupG/H
centerC2#23764372
commutatorC2×C8×C79C22×C4
FrattiniC22×C8C22×D79
FittingC79×#1833C2
socleC2×C79#1993
prime radicalC23×C79AGL(1,ℤ/8)
cosocleC22×C8×C79C23
hypercenter#1833D79
hypocenterC79#13291
LCSG ▷ C2×C8×C79 ▷ C4×C79 ▷ C2×C79 ▷ C79
UCSC1 ◁ C2 ◁ C22×C4 ◁ #405 ◁ #1833

306 conjugacy classes of subgroups; only the 107 normal subgroups are shown.

normal subgroups only

This group has 306 conjugacy classes of subgroups — too many to draw. Only its 107 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)(80,83,86,102)(81,88)(82,95)(84,100,104,111)(85,101,105,87)(89,98)(90,99)(91,107)(92,106)(93,94,109,110)(96,108)(97,103);(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)(80,82,94,107,105,96,84,88,86,97,110,99,85,98,104,106)(81,87,95,111,90,102,108,109,92,101,103,100,91,83,89,93);(80,81)(82,93,97,109)(83,99,102,107)(84,103)(85,90)(86,92)(87,88,101,106)(89,94)(91,105)(95,104)(96,100,98,111)(108,110)

Polycyclic presentation:

2^8,79|a^2=f,b^2=def,c^2=eg,d^2=g,e^2=h,g^2=h,b^a=bd,c^a=ce,d^a=dg,g^a=gh,c^b=cg,e^b=eh,f^b=fh,i^b=i^78,f^c=fh

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, 88204);