Finite Group DatabasebetaFinite Group Databasebeta| order | 256 |
| nilpotency class | 2 |
| isoclinism | isoclinic class of #392 |
| automorphism | Aut(G) order 393216 |
| homology | Abelianization (H1) = C23×C4 · Schur multiplier (H2) = C26 |
| direct product | C4×#399 |
| subgroup | G/H | |
|---|---|---|
| center | C23×C4 | C23 |
| commutator | C23 | C23×C4 |
| Frattini, socle, cosocle | C24 | C24 |
| prime radical | C25 | C23 |
| LCS | G ▷ C23 ▷ C1 | |
| UCS | C1 ◁ C23×C4 ◁ G | |
| LECS | G ▷ C24 ▷ C1 | |
983 conjugacy classes of subgroups; only the 295 normal subgroups are shown.
This group has 983 conjugacy classes of subgroups — too many to draw. Only its 295 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 — 4 generators on 20 points:
(1,2,3,4);(5,6,7,8)(13,14,16,18)(15,19,20,17);(6,8)(9,10)(11,12)(13,15,16,20)(14,17,18,19);(6,8)(10,12)88 conjugacy classes — view the full character table.
| Fitting subgroup of | C4×#399⋊C3 |
| maximal subgroup of | #99555, #99558, #99571, … |
| maximal normal subgroup of | #99555, #99558, #99571, … |
| maximal quotient of | C4×#1439, C4×#1445, C4×#1444, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(256, 6850);