Finite Group Databasebeta

#34199874

order20224
automorphism?
homologyAbelianization (H1) = C22×C8 · Schur multiplier (H2) = C4

Aliases

No aliases for this group.

Splittings

FittingC79×#1367 ⋊ C2
SylowC79 ⋊ #12014

Subgroups

subgroupG/H
centerC2×C8D4×D79
commutatorC2×C4×C79C22×C8
FrattiniC4×C8C22×D79
FittingC79×#1367C2
socleC22×C79C2×C4⋊C8
prime radicalC22×D79C4⋊C8
cosocleC4×C8×C79C23
hypercenter#1367D79
hypocenterC79#12014
LCSG ▷ C2×C4×C79 ▷ C2×C79 ▷ C79
UCSC1 ◁ C2×C8 ◁ C4×C8 ◁ #1367

220 conjugacy classes of subgroups; only the 95 normal subgroups are shown.

normal subgroups only

This group has 220 conjugacy classes of subgroups — too many to draw. Only its 95 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) = 127
transitive degreeμt(G) = 10112

A minimal faithful permutation representation — 3 generators on 127 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)(80,83,85,84)(81,87,88,93)(82,90,92,91)(86,89,94,95)(98,106)(102,112)(107,118)(108,119)(113,122)(114,123)(120,126)(124,127);(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)(80,82,84,91,85,92,83,90)(81,86,87,89,88,94,93,95)(96,98)(97,102)(99,107)(100,108)(101,106)(103,113)(104,114)(105,112)(109,120)(110,118)(111,119)(115,124)(116,122)(117,123)(121,126)(125,127);(80,81)(82,89)(83,87)(84,93)(85,88)(86,91)(90,94)(92,95)(96,97,99,103,100,104,109,115,101,105,110,116,111,117,121,125)(98,102,107,113,108,114,120,124,106,112,118,122,119,123,126,127)

Polycyclic presentation:

2^8,79|a^2=e,b^2=d,c^2=f,d^2=f,e^2=g,g^2=h,b^a=bd,d^a=df,c^b=ch,i^c=i^78

Conjugacy classes & character table

2260 conjugacy classes. The character table is too large to display.

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(20224, 81173);