Finite Group DatabasebetaFinite Group Databasebeta| order | 256 |
| nilpotency class | 3 |
| isoclinism | isoclinic class of #10260 |
| automorphism | Aut(G) order 8192 |
| homology | Abelianization (H1) = C23 · Schur multiplier (H2) = C23 |
No aliases for this group.
| subgroup | G/H | |
|---|---|---|
| center, socle | C23 | #121 |
| commutator, Frattini, cosocle | C2×C42 | C23 |
| prime radical | C22×D4 | D4 |
| LCS | G ▷ C2×C42 ▷ C22 ▷ C1 | |
| UCS | C1 ◁ C23 ◁ C2×C42 ◁ G | |
| LECS | G ▷ C2×C42 ▷ C22 ▷ C1 | |
245 conjugacy classes of subgroups; only the 73 normal subgroups are shown.
This group has 245 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) = 20 |
| transitive degree | μt(G) = 128 |
A minimal faithful permutation representation — 3 generators on 20 points:
(5,6,7,9)(8,10,12,11)(14,15)(16,17)(19,20);(1,2)(3,4)(6,9)(10,11)(13,14)(15,17)(16,19)(18,20);(2,4)(6,10)(8,12)(9,11)(13,15,17,14,18,19,16,20)Polycyclic presentation:
2^8|a^2=gh,c^2=dh,d^2=g,e^2=h,f^2=g,b^a=bd,c^a=ce,d^a=dg,e^a=eh,f^a=fg,c^b=cf,d^b=dg,e^b=eg,f^b=fg,e^c=egh46 conjugacy classes — view the full character table.
| maximal subgroup of | C2×#10485, #240254, #240256, … |
| maximal normal subgroup of | C2×#10485, #240254, #240256, … |
| maximal quotient of | #104988, #104990, #105007, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(256, 3473);