Finite Group Databasebeta

C79×#7489 #34119178

order20224
nilpotency class5
isoclinismisoclinic class of #1404
automorphism?
homologyAbelianization (H1) = C42×C79 · Schur multiplier (H2) = C23

Aliases

direct productC79×#7489

Subgroups

subgroupG/H
center, socleC22×C79AΣL(1,𝔽16)
commutatorC2×Q8C42×C79
Frattini, cosocleC2×#124C22×C79
prime radicalC22×D4×C79D4
LCSG ▷ C2×Q8 ▷ C2×C4 ▷ C22 ▷ C2 ▷ C1
UCSC1 ◁ C22×C79 ◁ C23×C79 ◁ C22×C4×C79 ◁ C2×#124×C79 ◁ G

302 conjugacy classes of subgroups; only the 70 normal subgroups are shown.

normal subgroups only

This group has 302 conjugacy classes of subgroups — too many to draw. Only its 70 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) = 99
transitive degreeμt(G) = 2528

A minimal faithful permutation representation — 2 generators on 99 points:

(5,6,9,14)(7,17,13,10)(8,18,11,16)(12,15,19,20)(21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99);(1,2,3,4)(5,7)(6,12)(8,14)(9,18)(10,16)(11,15)(13,19)(17,20)

Conjugacy classes & character table

2686 conjugacy classes. The character table is too large to display.

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(20224, 477);