Finite Group DatabasebetaFinite Group Databasebeta| order | 256 |
| nilpotency class | 2 |
| isoclinism | isoclinic class of D4×#120 |
| automorphism | Aut(G) order 393216 |
| 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 | C24 | C24 |
| LCS | G ▷ C23 ▷ C1 | |
| UCS | C1 ◁ C23 ◁ G | |
| LECS | G ▷ C23 ▷ C1 | |
1156 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)(5,6,10,8)(7,11,9,12)(13,14,16,18)(15,19,20,17);(5,6,10,8)(7,12,9,11)(13,15,16,20)(14,17,18,19);(1,2)(3,4)(5,7,10,9)(6,11,8,12)(13,14)(15,17)(16,18)(19,20);(5,8,10,6)(7,11,9,12);(5,9,10,7)(6,12,8,11)Polycyclic presentation:
2^8|a^2=fh,b^2=fh,c^2=h,d^2=h,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.
| Fitting subgroup of | #36577⋊C3 |
| maximal subgroup of | #98214, #224575, #224591, … |
| maximal normal subgroup of | #98214, #224575, #224591, … |
| maximal quotient of | #518992, #519000, #519060, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(256, 29565);