Finite Group DatabasebetaFinite Group Databasebeta| order | 256 |
| nilpotency class | 3 |
| isoclinism | isoclinic class of #1999 |
| automorphism | Aut(G) order 262144 |
| homology | Abelianization (H1) = C24 · Schur multiplier (H2) = C27 |
| direct product | C2×#2041 |
| subgroup | G/H | |
|---|---|---|
| center, socle | C24 | C2×D4 |
| commutator, Frattini, cosocle | C22×C4 | C24 |
| prime radical | C22×#127 | C2 |
| LCS | G ▷ C22×C4 ▷ C2 ▷ C1 | |
| UCS | C1 ◁ C24 ◁ C22×C42 ◁ G | |
| LECS | G ▷ C22×C4 ▷ C2 ▷ C1 | |
1115 conjugacy classes of subgroups; only the 231 normal subgroups are shown.
This group has 1115 conjugacy classes of subgroups — too many to draw. Only its 231 normal subgroups are shown.
Dotted edges: containments with no intermediate normal subgroup — omitted non-normal subgroups may lie between.
| minimal degree | μ(G) = 18 |
| transitive degree | μt(G) = 128 |
A minimal faithful permutation representation — 4 generators on 18 points:
(1,2);(3,4)(5,6)(8,9)(11,12)(13,15)(14,17)(16,18);(7,8)(9,10)(11,12)(13,15)(14,17)(16,18);(4,6)(7,9,10,8)(12,15)(13,18)(16,17)64 conjugacy classes — view the full character table.
| maximal subgroup of | #99640, #99641, #102907, … |
| maximal normal subgroup of | #99640, #99641, #102907, … |
| maximal quotient of | C2×#10402, C2×#10403, #238438, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(256, 16489);