Finite Group DatabasebetaFinite Group Databasebeta| order | 256 |
| nilpotency class | 2 |
| isoclinism | isoclinic class of #14715 |
| automorphism | Aut(G) order 524288 |
| homology | Abelianization (H1) = C24 · Schur multiplier (H2) = C25×C4 |
No aliases for this group.
| subgroup | G/H | |
|---|---|---|
| center, commutator, Frattini, socle, cosocle | C24 | C24 |
| prime radical | C25 | C23 |
| LCS | G ▷ C24 ▷ C1 | |
| UCS | C1 ◁ C24 ◁ G | |
| LECS | G ▷ C24 ▷ C1 | |
855 conjugacy classes of subgroups; only the 235 normal subgroups are shown.
This group has 855 conjugacy classes of subgroups — too many to draw. Only its 235 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:
(2,4)(6,7)(10,12)(13,14,16,18)(15,17,20,19);(5,6,8,7)(13,15)(14,17)(16,20)(18,19);(9,10)(11,12)(13,14)(15,19)(16,18)(17,20);(1,2,3,4)(5,7,8,6)Polycyclic presentation:
2^8|a^2=g,b^2=e,d^2=h,b^a=be,c^a=cf,d^a=dh,c^b=cg64 conjugacy classes — view the full character table.
| maximal subgroup of | #101015, #101018, #101047, … |
| maximal normal subgroup of | #101015, #101018, #101047, … |
| maximal quotient of | #154169, #154387, #154388, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(256, 8138);