Finite Group DatabasebetaFinite Group Databasebeta| order | 256 |
| nilpotency class | 3 |
| isoclinism | isoclinic class of #8346 |
| automorphism | Aut(G) = C22×#6499867 (order 2048) · Inn(G) = #379 · Out(G) = C25 |
| homology | Abelianization (H1) = C22×C4 · Schur multiplier (H2) = C24 |
No aliases for this group.
| subgroup | G/H | |
|---|---|---|
| center, socle | C22 | #379 |
| commutator | C22×C4 | C22×C4 |
| Frattini, cosocle | C2×C42 | C23 |
| prime radical | #3493 | C2 |
| LCS | G ▷ C22×C4 ▷ C22 ▷ C1 | |
| UCS | C1 ◁ C22 ◁ C2×C42 ◁ G | |
| LECS | G ▷ C2×C42 ▷ C22 ▷ C1 | |
360 conjugacy classes of subgroups; only the 73 normal subgroups are shown.
This group has 360 conjugacy classes of subgroups — too many to draw. Only its 73 normal subgroups are shown.
Dotted edges: containments with no intermediate normal subgroup — omitted non-normal subgroups may lie between.
| minimal degree | μ(G) = 40 |
| transitive degree | μt(G) = 64 |
A minimal faithful permutation representation — 3 generators on 40 points:
(2,5,6,7)(9,10,13,18,14,17,26,31)(11,19,22,32,21,15,25,28)(12,16,24,29,23,30,36,40)(20,27,35,38,34,33,37,39);(1,2)(3,7)(4,6)(5,8)(9,11)(10,15)(12,20)(13,25)(14,21)(16,27)(17,19)(18,32)(22,26)(23,34)(24,37)(28,31)(29,39)(30,33)(35,36)(38,40);(9,12,14,23)(10,16,17,30)(11,20,21,34)(13,24,26,36)(15,27,19,33)(18,29,31,40)(22,35,25,37)(28,38,32,39)Polycyclic presentation:
2^8|a^2=f,c^2=g,d^2=h,f^2=g,b^a=bd,c^a=ce,d^a=dg,d^b=dh,e^b=eg,f^b=fgh,d^c=dg46 conjugacy classes — view the full character table.
| maximal subgroup of | #139632, #139633, #139642, … |
| maximal normal subgroup of | #139632, #139633, #139642, … |
| maximal quotient of | #96939, #96941, #96943, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(256, 1337);