Finite Group DatabasebetaFinite Group Databasebeta| order | 256 |
| nilpotency class | 2 |
| isoclinism | isoclinic class of D4×#120 |
| automorphism | Aut(G) order 262144 |
| homology | Abelianization (H1) = C25 · Schur multiplier (H2) = C28 |
No aliases for this group.
| subgroup | G/H | |
|---|---|---|
| center, commutator, Frattini, socle, cosocle | C23 | C25 |
| prime radical | #2541 | C2 |
| LCS | G ▷ C23 ▷ C1 | |
| UCS | C1 ◁ C23 ◁ G | |
| LECS | G ▷ C23 ▷ C1 | |
1205 conjugacy classes of subgroups.
| minimal degree | μ(G) = 20 |
| transitive degree | μt(G) = 128 |
A minimal faithful permutation representation — 5 generators on 20 points:
(2,4)(5,6,9,7)(8,10,12,11)(14,17)(18,20);(5,6,9,7)(8,11,12,10)(13,14)(15,18)(16,17)(19,20);(1,2,3,4)(6,7)(10,11)(13,14)(15,18)(16,17)(19,20);(5,7,9,6)(8,10,12,11)(13,15,16,19)(14,18,17,20);(5,8,9,12)(6,10,7,11)Polycyclic presentation:
2^8|a^2=h,b^2=h,c^2=fgh,d^2=fh,e^2=h,b^a=bf,c^a=cg,c^b=ch,e^b=eh,d^c=dh,e^d=eh70 conjugacy classes — view the full character table.
| maximal subgroup of | #98260, #130554, #130565, … |
| maximal normal subgroup of | #98260, #130554, #130565, … |
| maximal quotient of | #519081, #519234, #519273, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(256, 29585);