Finite Group Databasebeta

#34204385

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

Aliases

No aliases for this group.

Splittings

SylowC79 ⋊ #12826

Subgroups

subgroupG/H
centerC2#23763410
commutatorC2×C8×C79C22×C4
FrattiniC22×C8C22×D79
FittingC79×#2948C2
socleC2×C79#1804
prime radicalC22×D8×C79C22
cosocleC22×C8×C79C23
hypercenter#2948D79
hypocenterC79#12826
LCSG ▷ C2×C8×C79 ▷ C4×C79 ▷ C2×C79 ▷ C79
UCSC1 ◁ C2 ◁ C22×C4 ◁ #405 ◁ #2948

412 conjugacy classes of subgroups; only the 127 normal subgroups are shown.

normal subgroups only

This group has 412 conjugacy classes of subgroups — too many to draw. Only its 127 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)(81,88)(83,85)(84,99)(87,102)(89,90)(91,106)(92,107)(93,96)(94,111)(97,100)(98,110)(101,105)(103,109)(104,108);(80,82)(81,87,91,104)(83,93)(84,98)(85,96)(86,95)(88,102,106,108)(89,92,101,109)(90,107,105,103)(94,100)(97,111)(99,110);(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)(82,92,95,109)(83,89)(84,88)(85,101)(86,91)(87,93,104,96)(90,99)(94,107,98,103)(97,105)(100,106)(102,111,108,110)

Polycyclic presentation:

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

Conjugacy classes & character table

1756 conjugacy classes. The character table is too large to display.

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(20224, 85684);