Finite Group DatabasebetaFinite Group Databasebeta| order | 256 |
| nilpotency class | 4 |
| isoclinism | isoclinic class of #1343 |
| automorphism | Aut(G) = C25×B(4,𝔽2) (order 2048) · Inn(G) = #99 · Out(G) = C26 |
| homology | Abelianization (H1) = C42 · Schur multiplier (H2) = C24 |
No aliases for this group.
| subgroup | G/H | |
|---|---|---|
| center, socle | C23 | #99 |
| commutator | C22×C4 | C42 |
| Frattini, cosocle | C22×C22⋊C4 | C22 |
| prime radical | C25 | D4 |
| LCS | G ▷ C22×C4 ▷ C23 ▷ C2 ▷ C1 | |
| UCS | C1 ◁ C23 ◁ C24 ◁ C22×C22⋊C4 ◁ G | |
| LECS | G ▷ C22×C22⋊C4 ▷ C23 ▷ C2 ▷ C1 | |
316 conjugacy classes of subgroups; only the 59 normal subgroups are shown.
This group has 316 conjugacy classes of subgroups — too many to draw. Only its 59 normal subgroups are shown.
Dotted edges: containments with no intermediate normal subgroup — omitted non-normal subgroups may lie between.
| minimal degree | μ(G) = 20 |
| transitive degree | μt(G) = 64 |
A minimal faithful permutation representation — 2 generators on 20 points:
(1,2,3,4)(5,6)(7,9)(8,11)(10,12)(14,17)(18,19);(6,9,11,10)(13,14)(15,19,20,17)(16,18)Polycyclic presentation:
2^8|a^2=d,b^2=e,c^2=f,b^a=bc,c^a=cf,e^a=efg,c^b=cg,g^b=gh,e^c=eh46 conjugacy classes — view the full character table.
| maximal subgroup of | C2×#7250, #127492, #127493, … |
| maximal normal subgroup of | C2×#7250, #127492, #127493, … |
| maximal quotient of | #93031, #93032, #93035, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(256, 238);