Finite Group Databasebeta

#34175995

order20224
automorphism?
homologyAbelianization (H1) = C42 · Schur multiplier (H2) = C23

Aliases

No aliases for this group.

Splittings

SylowC79 ⋊ #7481

Subgroups

subgroupG/H
centerC2#23761517
commutatorC2×Q8×C79C42
FrattiniC2×#124C2×D79
FittingC2×#354×C79C2
socleC2×C79#1390
prime radicalC22×D4×C79D4
cosocleC2×#124×C79C22
hypercenterC2×#354D79
hypocenterC79#7481
LCSG ▷ C2×Q8×C79 ▷ C2×C4×C79 ▷ C22×C79 ▷ C2×C79 ▷ C79
UCSC1 ◁ C2 ◁ C23 ◁ C22×C4 ◁ C2×#124 ◁ C2×#354

284 conjugacy classes of subgroups; only the 59 normal subgroups are shown.

normal subgroups only

This group has 284 conjugacy classes of subgroups — too many to draw. Only its 59 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 — 2 generators on 111 points:

(1,3)(2,7,9,23)(4,12)(5,13)(6,15)(8,11,25,28)(10,22,19,24)(14,21)(16,27,26,29)(17,31)(18,32)(20,30)(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)(82,83)(84,85)(86,87)(88,89)(90,91)(92,93)(94,95)(96,97)(98,99)(100,101)(102,103)(104,105)(106,107)(108,109)(110,111);(1,2)(3,11,13,27)(4,16,17,26)(5,19,21,10)(6,9)(7,12,22,30)(8,18)(14,29,15,28)(20,25)(23,31,24,32)(33,34,36,38,40,42,44,46,48,50,52,54,56,58,60,62,64,66,68,70,72,74,76,78,80,82,84,86,88,90,92,94,96,98,100,102,104,106,108,110,111,109,107,105,103,101,99,97,95,93,91,89,87,85,83,81,79,77,75,73,71,69,67,65,63,61,59,57,55,53,51,49,47,45,43,41,39,37,35)

Polycyclic presentation:

2^8,79|a^2=d,b^2=e,c^2=h,f^2=h,b^a=bc,c^a=cf,e^a=eh,f^a=fg,g^a=gh,d^b=df,f^b=fh,g^b=gh,i^b=i^78,d^c=dgh,f^c=fh,f^d=fh

Conjugacy classes & character table

1042 conjugacy classes. The character table is too large to display.

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(20224, 57294);