Finite Group DatabasebetaFinite Group Databasebeta| order | 256 |
| nilpotency class | 3 |
| isoclinism | isoclinic class of #3264 |
| automorphism | Aut(G) = C211×D4 (order 16384) · Inn(G) = C22×D4 · Out(G) = C29 |
| homology | Abelianization (H1) = C23×C4 · Schur multiplier (H2) = C25 |
No aliases for this group.
| subgroup | G/H | |
|---|---|---|
| center, socle | C23 | C22×D4 |
| commutator | C2×C4 | C23×C4 |
| Frattini, cosocle | C22×C4 | C24 |
| prime radical | C2×#553 | C2 |
| LCS | G ▷ C2×C4 ▷ C2 ▷ C1 | |
| UCS | C1 ◁ C23 ◁ C2×C4×D4 ◁ G | |
| LECS | G ▷ C22×C4 ▷ C2 ▷ C1 | |
629 conjugacy classes of subgroups.
| minimal degree | μ(G) = 20 |
| transitive degree | μt(G) = 128 |
A minimal faithful permutation representation — 4 generators on 20 points:
(1,2,3,4)(6,9)(10,12)(14,17)(15,19)(18,20);(5,6)(7,10)(8,9)(11,12)(14,18)(17,20);(5,7,8,11)(6,10,9,12)(13,14,16,18)(15,20,19,17);(6,9)(10,12)Polycyclic presentation:
2^8|a^2=g,c^2=eh,f^2=h,b^a=be,c^a=cf,f^a=fh,c^b=ch,d^b=de,f^c=fh58 conjugacy classes — view the full character table.
| maximal subgroup of | C2×#22493, #6379284, #6379295, … |
| maximal normal subgroup of | C2×#22493, #6379284, #6379295, … |
| maximal quotient of | #223222, #223230, #223235, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(256, 15481);