Finite Group DatabasebetaFinite Group Databasebeta| order | 256 |
| nilpotency class | 4 |
| isoclinism | isoclinic class of #7076 |
| automorphism | Aut(G) = C2×#72263997 (order 2048) · Inn(G) = #327 · Out(G) = C23×C4 |
| homology | Abelianization (H1) = C2×C4 · Schur multiplier (H2) = C2 |
No aliases for this group.
| subgroup | G/H | |
|---|---|---|
| center, socle | C22 | #327 |
| commutator | C22×C8 | C2×C4 |
| Frattini, cosocle | C2×C4⋊C8 | C22 |
| prime radical | C23 | #102 |
| LCS | G ▷ C22×C8 ▷ C22×C4 ▷ C22 ▷ C1 | |
| UCS | C1 ◁ C22 ◁ C22×C4 ◁ C2×C4⋊C8 ◁ G | |
| LECS | G ▷ C2×C4⋊C8 ▷ C22×C4 ▷ C22 ▷ C1 | |
90 conjugacy classes of subgroups.
| minimal degree | μ(G) = 32 |
| transitive degree | μt(G) = 64 |
A minimal faithful permutation representation — 2 generators on 32 points:
(1,2,4,8,5,7,12,15)(3,9,10,16,11,6,13,14)(17,18)(19,22)(20,29)(21,25)(23,26)(24,27)(28,31)(30,32);(1,3,5,11)(2,6,7,9)(4,10,12,13)(8,16,15,14)(18,22)(19,26)(20,27)(23,24)(25,31)(28,32)(29,30)Polycyclic presentation:
2^8|a^2=d,b^2=gh,c^2=fh,d^2=gh,e^2=h,f^2=h,b^a=bc,c^a=ce,e^a=eg,f^a=fh,c^b=cf,d^b=defh,e^b=eh,f^b=fh,d^c=dgh34 conjugacy classes — view the full character table.
| maximal subgroup of | C2×#7091, #122659, #122661, … |
| maximal normal subgroup of | C2×#7091, #122659, #122661, … |
| maximal quotient of | #92848, #92880, #93034, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(256, 79);