Finite Group DatabasebetaFinite Group Databasebeta| order | 256 |
| nilpotency class | 3 |
| isoclinism | isoclinic class of #3264 |
| automorphism | Aut(G) = C28×D4 (order 2048) · Inn(G) = C22×D4 · Out(G) = C26 |
| homology | Abelianization (H1) = C23×C4 · Schur multiplier (H2) = C24 |
No aliases for this group.
| subgroup | G/H | |
|---|---|---|
| center | C2×C4 | C22×D4 |
| commutator | C2×C4 | C23×C4 |
| Frattini, cosocle | C22×C4 | C24 |
| socle | C22 | C2×C4×D4 |
| prime radical | #525 | C22 |
| LCS | G ▷ C2×C4 ▷ C2 ▷ C1 | |
| UCS | C1 ◁ C2×C4 ◁ C2×C22⋊C8 ◁ G | |
| LECS | G ▷ C22×C4 ▷ C2 ▷ C1 | |
365 conjugacy classes of subgroups.
| minimal degree | μ(G) = 40 |
| transitive degree | μt(G) = 64 |
A minimal faithful permutation representation — 4 generators on 40 points:
(2,5)(6,8)(9,10,14,18,15,19,13,27)(11,16,23,31,21,30,22,37)(12,24,26,17,25,33,28,32)(20,34,35,29,36,39,38,40);(1,2)(3,6)(4,5)(7,8)(9,11,14,23,15,21,13,22)(10,16,18,31,19,30,27,37)(12,20,26,35,25,36,28,38)(17,29,33,39,32,40,24,34);(1,3,4,7)(2,6,5,8)(9,12)(10,17)(11,20)(13,28)(14,26)(15,25)(16,29)(18,33)(19,32)(21,36)(22,38)(23,35)(24,27)(30,40)(31,39)(34,37);(2,5)(6,8)(11,21)(12,25)(16,30)(17,32)(22,23)(24,33)(26,28)(31,37)Polycyclic presentation:
2^8|a^2=g,b^2=g,c^2=e,f^2=h,g^2=h,b^a=be,c^a=cf,f^a=fh,d^b=deh,d^c=dh,f^c=fh58 conjugacy classes — view the full character table.
| maximal subgroup of | C2×#22951, #6381662, #6381664, … |
| maximal normal subgroup of | C2×#22951, #6381662, #6381664, … |
| maximal quotient of | #228310, #228311, #228312, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(256, 15939);