Finite Group Databasebeta
Cayley diagram

C4⋊(C7⋊C8) #6378

order224
isoclinismisoclinic class of Dic14
automorphismAut(G) = C2×#120×AGL(1,𝔽7) (order 2688) · Inn(G) = C2×D7 · Out(G) = C22×C3×D4
homologyAbelianization (H1) = C2×C8 · Schur multiplier (H2) = C2

Aliases

unambiguous semidirect productC4⋊(C7⋊C8)

Splittings

SylowC7 ⋊ C4⋊C8

Subgroups

subgroupG/H
center, FrattiniC2×C4C2×D7
commutatorC2×C7C2×C8
FittingC42×C7C2
socle, prime radicalC22×C7C2×C4
cosocleC2×C4×C7C22
hypercenterC42D7
hypocenterC7C4⋊C8
LCSG ▷ C2×C7 ▷ C7
UCSC1 ◁ C2×C4 ◁ C42

38 conjugacy classes of subgroups.

Full subgroup data →

Presentation

minimal degreeμ(G) = 19
transitive degreeμt(G) = 224

A minimal faithful permutation representation — 2 generators on 19 points:

(1,2,4,6,7,5,3)(8,9,10,11);(2,3)(4,5)(6,7)(9,11)(12,13,14,16,15,17,18,19)

Polycyclic presentation:

2^5,7|a^2=c,b^2=d,c^2=e,b^a=bd,f^a=f^6

Conjugacy classes & character table

68 conjugacy classes — view the full character table.

Relationships

maximal subgroup of#89251, #89252, #89253, …
maximal normal subgroup of#89251, #89252, #89253, …
maximal quotient of#89252, #89253, C4⋊(C7⋊C16), …

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(224, 10);