Finite Group Databasebeta

#34203281

order20224
automorphism?
homologyAbelianization (H1) = C2×C4×C8 · Schur multiplier (H2) = C42

Aliases

No aliases for this group.

Splittings

SylowC79 ⋊ #12594

Subgroups

subgroupG/H
centerC42C4×Dic79
commutatorC4×C79C2×C4×C8
FrattiniC22×C8C22×D79
FittingC4×#97×C79C2
socleC22×C79C2×#97
prime radicalC23×C79C2×M16
cosocleC22×C8×C79C23
hypercenterC4×#97D79
hypocenterC79#12594
LCSG ▷ C4×C79 ▷ C79
UCSC1 ◁ C42 ◁ C4×#97

354 conjugacy classes of subgroups; only the 203 normal subgroups are shown.

normal subgroups only

This group has 354 conjugacy classes of subgroups — too many to draw. Only its 203 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) = 103
transitive degreeμt(G) = 5056

A minimal faithful permutation representation — 3 generators on 103 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)(88,90,91,101,94,100,93,92)(89,96,97,103,99,102,95,98);(89,95,99,97)(90,100)(92,101)(96,103,102,98);(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)(80,81,82,84,83,85,86,87)(88,89,92,98,93,95,100,102,94,99,101,103,91,97,90,96)

Polycyclic presentation:

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

Conjugacy classes & character table

3208 conjugacy classes. The character table is too large to display.

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(20224, 84580);