Finite Group DatabasebetaFinite Group Databasebeta| order | 256 |
| nilpotency class | 3 |
| isoclinism | isoclinic class of #9914 |
| automorphism | Aut(G) = C2×#72296209 (order 8192) · Inn(G) = #120 · Out(G) = C2×#2846 |
| homology | Abelianization (H1) = C23 · Schur multiplier (H2) = C23 |
No aliases for this group.
| subgroup | G/H | |
|---|---|---|
| center, socle | C23 | #120 |
| commutator, Frattini, cosocle | C23×C4 | C23 |
| prime radical | C2×#121 | C22 |
| LCS | G ▷ C23×C4 ▷ C22 ▷ C1 | |
| UCS | C1 ◁ C23 ◁ C23×C4 ◁ G | |
| LECS | G ▷ C23×C4 ▷ C22 ▷ C1 | |
329 conjugacy classes of subgroups; only the 65 normal subgroups are shown.
This group has 329 conjugacy classes of subgroups — too many to draw. Only its 65 normal subgroups are shown.
Dotted edges: containments with no intermediate normal subgroup — omitted non-normal subgroups may lie between.
| minimal degree | μ(G) = 28 |
| transitive degree | μt(G) = 64 |
A minimal faithful permutation representation — 3 generators on 28 points:
(1,2)(3,4)(5,6,9,7)(8,11,10,12)(13,14,17,21)(15,22,25,23)(16,27,18,20)(19,26,28,24);(6,11)(7,12)(8,10)(13,15,17,25)(14,19,21,28)(16,26,18,24)(20,23,27,22);(2,4)(5,7)(6,9)(8,12)(10,11)(13,14)(15,23)(16,20)(17,21)(18,27)(19,24)(22,25)(26,28)Polycyclic presentation:
2^8|a^2=g,b^2=gh,d^2=g,f^2=g,b^a=bd,c^a=ce,d^a=dg,f^a=fh,c^b=cf,d^b=dg,f^b=fg,d^c=dh,f^c=fg40 conjugacy classes — view the full character table.
| maximal subgroup of | C2×#9971, #232206, #232208, … |
| maximal normal subgroup of | C2×#9971, #232206, #232208, … |
| maximal quotient of | #102438, #102452, #102455, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(256, 2959);