Finite Group Databasebeta

#34176014

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

Aliases

No aliases for this group.

Splittings

SylowC79 ⋊ #7487

Subgroups

subgroupG/H
centerC22#19098350
commutatorC2×D4×C79C42
FrattiniC2×#124C2×D79
FittingC79×#1885C2
socleC22×C79AΣL(1,𝔽16)
prime radicalC22×D4×C79C2×C4
cosocleC2×#124×C79C22
hypercenter#1885D79
hypocenterC79#7487
LCSG ▷ C2×D4×C79 ▷ C2×C4×C79 ▷ C22×C79 ▷ C2×C79 ▷ C79
UCSC1 ◁ C22 ◁ C23 ◁ C22×C4 ◁ C2×#124 ◁ #1885

298 conjugacy classes of subgroups; only the 63 normal subgroups are shown.

normal subgroups only

This group has 298 conjugacy classes of subgroups — too many to draw. Only its 63 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) = 99
transitive degreeμt(G) = 2528

A minimal faithful permutation representation — 2 generators on 99 points:

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

Polycyclic presentation:

2^8,79|a^2=d,b^2=e,d^2=h,f^2=h,b^a=bc,c^a=cf,f^a=fg,g^a=gh,i^a=i^78,d^b=dfh,f^b=fh,g^b=gh,d^c=dgh,f^c=fh,f^d=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, 57313);