Finite Group DatabasebetaFinite Group Databasebeta| order | 256 |
| nilpotency class | 3 |
| isoclinism | isoclinic class of #3288 |
| automorphism | Aut(G) order 8192 |
| homology | Abelianization (H1) = C23×C4 · Schur multiplier (H2) = C25 |
No aliases for this group.
| subgroup | G/H | |
|---|---|---|
| center, socle | C22 | D42 |
| commutator | C2×C4 | C23×C4 |
| Frattini, cosocle | C22×C4 | C24 |
| prime radical | C2×#453 | C2 |
| LCS | G ▷ C2×C4 ▷ C2 ▷ C1 | |
| UCS | C1 ◁ C22 ◁ C22×C4 ◁ G | |
| LECS | G ▷ C22×C4 ▷ C2 ▷ C1 | |
531 conjugacy classes of subgroups; only the 167 normal subgroups are shown.
This group has 531 conjugacy classes of subgroups — too many to draw. Only its 167 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) = 32 |
A minimal faithful permutation representation — 4 generators on 20 points:
(1,2,4,3)(5,6)(7,15)(8,16)(9,12)(10,19)(11,14)(13,20)(17,18);(1,3,4,2)(5,7,11,17)(6,9,14,8)(10,16,20,12)(13,18,19,15);(5,8)(6,7)(9,11)(10,18)(12,13)(14,17)(15,20)(16,19);(5,9)(6,12)(7,13)(8,11)(10,18)(14,16)(15,20)(17,19)Polycyclic presentation:
2^8|a^2=g,b^2=gh,e^2=h,f^2=h,b^a=be,c^a=cf,e^a=eh,f^a=fh,d^b=de,e^b=eh,f^c=fh,e^d=eh52 conjugacy classes — view the full character table.
| maximal subgroup of | #152572, C2×#22891, #6381466, … |
| maximal normal subgroup of | #152572, C2×#22891, #6381466, … |
| maximal quotient of | #226935, #226943, #226951, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(256, 15879);