Finite Group Databasebeta

#34208632

order20224
automorphism?
homologyAbelianization (H1) = C22×C4 · Schur multiplier (H2) = C23

Aliases

No aliases for this group.

Splittings

SylowC79 ⋊ #13599

Subgroups

subgroupG/H
centerC2C2×#19098358
commutatorC42×C79C22×C4
FrattiniC4⋊Q8C22×D79
FittingC79×#3139C2
socleC2×C79C2×#354
prime radicalC23×C79#99
cosocleC4⋊Q8×C79C23
hypercenter#3139D79
hypocenterC79#13599
LCSG ▷ C42×C79 ▷ C2×C4×C79 ▷ C22×C79 ▷ C2×C79 ▷ C79
UCSC1 ◁ C2 ◁ C23 ◁ C22×C4 ◁ C2×C4⋊Q8 ◁ #3139

312 conjugacy classes of subgroups; only the 79 normal subgroups are shown.

normal subgroups only

This group has 312 conjugacy classes of subgroups — too many to draw. Only its 79 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:

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

Polycyclic presentation:

2^8,79|a^2=e,b^2=g,d^2=gh,e^2=h,f^2=h,b^a=bd,d^a=df,f^a=fg,g^a=gh,i^a=i^78,c^b=ch,d^b=dg,e^b=efg,f^b=fh,e^d=egh,f^e=fh

Conjugacy classes & character table

1276 conjugacy classes. The character table is too large to display.

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(20224, 89931);