Finite Group DatabasebetaFinite Group Databasebeta| order | 256 |
| nilpotency class | 3 |
| isoclinism | isoclinic class of #327 |
| automorphism | Aut(G) = #72280587 (order 2048) · Inn(G) = C22⋊C4 · Out(G) = C2×#525 |
| homology | Abelianization (H1) = C4×C8 · Schur multiplier (H2) = C2 |
No aliases for this group.
| subgroup | G/H | |
|---|---|---|
| center | C42 | C22⋊C4 |
| commutator | C2×C4 | C4×C8 |
| Frattini, cosocle | C2×C4×C8 | C22 |
| socle | C22 | #336 |
| prime radical | C23 | C4⋊C8 |
| LCS | G ▷ C2×C4 ▷ C22 ▷ C1 | |
| UCS | C1 ◁ C42 ◁ C2×C4×C8 ◁ G | |
| LECS | G ▷ C2×C4×C8 ▷ C2×C4 ▷ C2 ▷ C1 | |
108 conjugacy classes of subgroups.
| minimal degree | μ(G) = 24 |
| transitive degree | μt(G) = 128 |
A minimal faithful permutation representation — 2 generators on 24 points:
(1,2)(3,5)(4,7)(6,8)(9,10,12,18,15,11,16,20,14,17,13,23,22,19,24,21);(2,5,7,6)(9,11,13,20,15,17,24,23,14,19,12,21,22,10,16,18)Polycyclic presentation:
2^8|a^2=d,b^2=e,c^2=fh,d^2=g,e^2=g,g^2=h,b^a=bc,c^a=cf,e^a=ef,c^b=ch,d^b=dh76 conjugacy classes — view the full character table.
| maximal subgroup of | C2×#7166, #126737, #126738, … |
| maximal normal subgroup of | C2×#7166, #126737, #126738, … |
| maximal quotient of | #93263, #93340, #93353, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(256, 154);