Finite Group Databasebeta

#34197473

order20224
automorphism?
homologyAbelianization (H1) = C22×C8 · Schur multiplier (H2) = C2×C4

Aliases

No aliases for this group.

Splittings

FittingC79×#2162 ⋊ C2
SylowC79 ⋊ #11461

Subgroups

subgroupG/H
centerC2×C4C2×(C2×D79)⋊C4
commutatorC23×C79C22×C8
FrattiniC22×C8C22×D79
FittingC79×#2162C2
socleC22×C79C2×C22⋊C8
prime radicalC23×D79C2×C8
cosocleC22×C8×C79C23
hypercenter#2162D79
hypocenterC79#11461
LCSG ▷ C23×C79 ▷ C2×C79 ▷ C79
UCSC1 ◁ C2×C4 ◁ C2×C4×C8 ◁ #2162

320 conjugacy classes of subgroups; only the 103 normal subgroups are shown.

normal subgroups only

This group has 320 conjugacy classes of subgroups — too many to draw. Only its 103 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) = 5056

A minimal faithful permutation representation — 3 generators on 127 points:

(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)(80,83,84,91)(81,86,87,93)(82,89,90,95)(85,92,88,94)(98,106)(102,112)(107,118)(108,119)(113,122)(114,123)(120,126)(124,127);(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)(81,85)(83,89)(84,90)(86,92)(87,88)(91,95)(93,94)(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)(82,88,90,85)(83,86)(84,87)(89,94,95,92)(91,93)(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,c^2=f,e^2=g,g^2=h,b^a=bd,d^a=df,c^b=ch,e^b=ef,i^b=i^78

Conjugacy classes & character table

3184 conjugacy classes. The character table is too large to display.

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(20224, 78772);