Finite Group Databasebeta

#34198817

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

Aliases

No aliases for this group.

Splittings

SylowC79 ⋊ #11771

Subgroups

subgroupG/H
centerC2#23761906
commutatorC2×C8×C79C22×C4
FrattiniC2×M16C22×D79
FittingC79×#1342C2
socleC2×C79#1505
prime radicalC23×C79AGL(1,ℤ/8)
cosocleC2×M16×C79C23
hypercenter#1342D79
hypocenterC79#11771
LCSG ▷ C2×C8×C79 ▷ C2×C4×C79 ▷ C2×C79 ▷ C79
UCSC1 ◁ C2 ◁ C2×C4 ◁ C2×M16 ◁ #1342

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

normal subgroups only

This group has 292 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) = 143
transitive degreeμt(G) = 5056

A minimal faithful permutation representation — 3 generators on 143 points:

(1,2)(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)(80,83,86,102,87,103,85,101)(81,89,109,135,92,116,91,115)(82,94,98,125,96,124,97,99)(84,100,108,134,106,132,107,133)(88,110,119,138,112,137,111,113)(90,114,120,141,118,140,104,131)(93,121,128,143,122,139,117,129)(95,123,105,136,127,142,126,130);(80,82,87,96)(81,88,92,112)(83,99,103,125)(84,105,106,126)(85,98,86,97)(89,113,116,138)(90,117,118,128)(91,119,109,111)(93,120,122,104)(94,102,124,101)(95,107,127,108)(100,123,132,142)(110,135,137,115)(114,139,140,121)(129,141,143,131)(130,133,136,134);(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)(82,93,96,122)(83,89)(84,104,106,120)(85,91)(86,109)(87,92)(88,95)(90,107,118,108)(94,121,124,139)(97,117,98,128)(99,129,125,143)(100,131,132,141)(101,115)(102,135)(103,116)(105,119)(110,123)(111,126)(112,127)(113,130)(114,133,140,134)(136,138)(137,142)

Polycyclic presentation:

2^8,79|a^2=e,b^2=h,c^2=fh,d^2=gh,f^2=h,g^2=h,b^a=bd,d^a=df,g^a=gh,i^a=i^78,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, 80116);