Finite Group Databasebeta

#34203906

order20224
automorphism?
homologyAbelianization (H1) = C22×C4 · Schur multiplier (H2) = C25

Aliases

No aliases for this group.

Splittings

FittingC79×#1830 ⋊ C2
SylowC79 ⋊ #12730

Subgroups

subgroupG/H
centerC2#23763317
commutatorC22×C4×C79C22×C4
FrattiniC22×Q8C22×D79
FittingC79×#1830C2
socleC2×C79#1782
prime radicalC2×#11929624C2×C4
cosocleC22×Q8×C79C23
hypercenter#1830D79
hypocenterC79#12730
LCSG ▷ C22×C4×C79 ▷ C22×C79 ▷ C2×C79 ▷ C79
UCSC1 ◁ C2 ◁ C23 ◁ #519 ◁ #1830

666 conjugacy classes of subgroups; only the 103 normal subgroups are shown.

normal subgroups only

This group has 666 conjugacy classes of subgroups — too many to draw. Only its 103 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)(80,83,86,97)(81,88)(82,93,85,98)(84,96,100,111)(87,101)(89,103)(90,104)(91,95)(92,106)(94,107,99,110)(102,108)(105,109);(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)(80,82,86,85)(81,87,91,102)(83,93,97,98)(84,99,100,94)(88,101,95,108)(89,90,105,92)(96,110,111,107)(103,104,109,106);(80,81,85,90,86,91,82,92)(83,95,98,106,97,88,93,104)(84,89,94,102,100,105,99,87)(96,109,107,101,111,103,110,108)

Polycyclic presentation:

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

Conjugacy classes & character table

1165 conjugacy classes. The character table is too large to display.

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(20224, 85205);