Finite Group Databasebeta

#34174913

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

Aliases

No aliases for this group.

Splittings

SylowC79 ⋊ #7066

Subgroups

subgroupG/H
centerC2×C4#14579076
commutatorC22×C4×C79C2×C8
FrattiniC2×C4⋊C8C2×D79
FittingC79×#1843C2
socleC22×C79#324
prime radicalC23×C79C22⋊C8
cosocleC2×C4⋊C8×C79C22
hypercenter#1843D79
hypocenterC79#7066
LCSG ▷ C22×C4×C79 ▷ C23×C79 ▷ C2×C79 ▷ C79
UCSC1 ◁ C2×C4 ◁ C22×C4 ◁ C2×C4⋊C8 ◁ #1843

176 conjugacy classes of subgroups; only the 51 normal subgroups are shown.

normal subgroups only

This group has 176 conjugacy classes of subgroups — too many to draw. Only its 51 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) = 119
transitive degreeμt(G) = 5056

A minimal faithful permutation representation — 2 generators on 119 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)(81,84,86,85)(88,90,93,98)(89,94)(91,99,101,111)(92,100,103,112)(95,105)(96,109)(97,106)(102,113,114,119)(104,107)(108,116)(110,118)(115,117);(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)(82,85,87,84)(83,86)(88,89,91,96,92,97,102,110,93,95,101,107,103,108,114,117)(90,94,99,104,100,106,113,115,98,105,111,109,112,116,119,118)

Polycyclic presentation:

2^8,79|a^2=d,b^2=eg,c^2=gh,d^2=f,f^2=h,b^a=bc,c^a=ce,e^a=eg,i^a=i^78,c^b=ch,d^b=degh,d^c=dg

Conjugacy classes & character table

1762 conjugacy classes. The character table is too large to display.

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(20224, 56212);