Finite Group Databasebeta

#34198809

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

Aliases

No aliases for this group.

Splittings

FittingC79×#1339 ⋊ C2
SylowC79 ⋊ #11770

Subgroups

subgroupG/H
centerC2#23761906
commutatorC2×C8×C79C22×C4
FrattiniC2×M16C22×D79
FittingC79×#1339C2
socleC2×C79#1505
prime radical#23774045C2
cosocleC2×M16×C79C23
hypercenter#1339D79
hypocenterC79#11770
LCSG ▷ C2×C8×C79 ▷ C2×C4×C79 ▷ C2×C79 ▷ C79
UCSC1 ◁ C2 ◁ C2×C4 ◁ C2×M16 ◁ #1339

316 conjugacy classes of subgroups; only the 65 normal subgroups are shown.

normal subgroups only

This group has 316 conjugacy classes of subgroups — too many to draw. Only its 65 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:

(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)(80,82,93,106,85,95,84,92)(81,87,90,103,91,104,89,102)(83,94,107,111,98,109,97,105)(86,99,100,110,96,108,88,101);(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)(81,86)(82,92)(83,97)(84,93)(87,101)(88,90)(89,100)(91,96)(94,109)(95,106)(98,107)(99,102)(103,108)(104,110);(80,81)(82,87)(83,96,98,86)(84,89)(85,91)(88,97,100,107)(90,93)(92,102)(94,108,109,99)(95,104)(101,105,110,111)(103,106)

Polycyclic presentation:

2^8,79|a^2=e,c^2=fh,d^2=gh,f^2=h,g^2=h,b^a=bd,d^a=df,g^a=gh,c^b=cf,d^b=dg,e^b=efgh,f^b=fh,g^b=gh,i^c=i^78,e^d=eh

Conjugacy classes & character table

814 conjugacy classes — view the full character table.

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(20224, 80108);