Finite Group DatabasebetaFinite Group Databasebeta| order | 256 |
| nilpotency class | 2 |
| isoclinism | isoclinic class of #392 |
| automorphism | Aut(G) order 25165824 |
| homology | Abelianization (H1) = C25 · Schur multiplier (H2) = C210 |
| direct product | C22×#397 |
| subgroup | G/H | |
|---|---|---|
| center, socle | C25 | C23 |
| commutator, Frattini, cosocle | C23 | C25 |
| prime radical | C26 | C22 |
| LCS | G ▷ C23 ▷ C1 | |
| UCS | C1 ◁ C25 ◁ G | |
| LECS | G ▷ C23 ▷ C1 | |
2615 conjugacy classes of subgroups; only the 823 normal subgroups are shown.
This group has 2615 conjugacy classes of subgroups — too many to draw. Only its 823 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) = 128 |
A minimal faithful permutation representation — 5 generators on 20 points:
(3,4);(1,2)(3,4);(9,10,11,12)(14,17)(18,19);(6,8)(13,14)(15,19)(16,17)(18,20);(5,6)(7,8)(9,10)(11,12)(13,15,16,20)(14,18,17,19)88 conjugacy classes — view the full character table.
| Fitting subgroup of | A4×#397 |
| maximal subgroup of | #97081, #97082, #97093, … |
| maximal normal subgroup of | #97081, #97082, #97093, … |
| maximal quotient of | C22×#1439, C22×#1440, C22×#1442, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(256, 27525);