Finite Group Databasebeta

#34203340

order20224
automorphism?
homologyAbelianization (H1) = C2×C42 · Schur multiplier (H2) = C23

Aliases

No aliases for this group.

Splittings

FittingC2×#347×C79 ⋊ C2
SylowC79 ⋊ #12608

Subgroups

subgroupG/H
centerC2×C4#14579118
commutatorC2×C4×C79C2×C42
FrattiniC22×C8C22×D79
FittingC2×#347×C79C2
socleC22×C79#432
prime radicalC23×D79M16
cosocleC22×C8×C79C23
hypercenterC2×#347D79
hypocenterC79#12608
LCSG ▷ C2×C4×C79 ▷ C2×C79 ▷ C79
UCSC1 ◁ C2×C4 ◁ C2×#97 ◁ C2×#347

462 conjugacy classes of subgroups; only the 147 normal subgroups are shown.

normal subgroups only

This group has 462 conjugacy classes of subgroups — too many to draw. Only its 147 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) = 115
transitive degreeμt(G) = 5056

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

Polycyclic presentation:

2^8,79|a^2=e,b^2=f,c^2=e,d^2=h,f^2=g,g^2=h,b^a=bd,c^a=ch,i^a=i^78,c^b=cg,d^b=dh,e^b=eh,f^c=fh

Conjugacy classes & character table

1780 conjugacy classes. The character table is too large to display.

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(20224, 84639);