Finite Group DatabasebetaFinite Group Databasebeta| order | 256 |
| nilpotency class | 2 |
| isoclinism | isoclinic class of #37644 |
| automorphism | Aut(G) = C215 (order 32768) · Inn(G) = C25 · Out(G) = C210 |
| 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 | #2543 | C2 |
| LCS | G ▷ C23 ▷ C1 | |
| UCS | C1 ◁ C23 ◁ G | |
| LECS | G ▷ C23 ▷ C1 | |
1103 conjugacy classes of subgroups.
| minimal degree | μ(G) = 20 |
| transitive degree | μt(G) = 128 |
A minimal faithful permutation representation — 5 generators on 20 points:
(7,11)(10,12)(13,14)(15,16)(17,18)(19,20);(2,4)(5,6,9,8)(7,10,11,12)(14,18)(15,19);(1,2)(3,4)(5,7,9,11)(6,10,8,12)(13,15,17,19)(14,16,18,20);(13,16)(14,19)(15,18)(17,20);(1,2)(3,4)(5,8,9,6)(7,12,11,10)Polycyclic presentation:
2^8|b^2=g,c^2=fg,e^2=g,b^a=bf,c^a=cg,d^a=df,c^b=ch,e^b=efh58 conjugacy classes — view the full character table.
| maximal subgroup of | C2×#37790, #7634966, #7635100, … |
| maximal normal subgroup of | C2×#37790, #7634966, #7635100, … |
| maximal quotient of | #521336, #522072, #522584, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(256, 30778);