Finite Group DatabasebetaFinite Group Databasebeta| order | 256 |
| nilpotency class | 2 |
| isoclinism | isoclinic class of #2403 |
| automorphism | Aut(G) order 131072 |
| homology | Abelianization (H1) = C25 · Schur multiplier (H2) = C28 |
No aliases for this group.
| subgroup | G/H | |
|---|---|---|
| center | C22×C4 | C24 |
| commutator, Frattini, socle, cosocle | C23 | C25 |
| LCS | G ▷ C23 ▷ C1 | |
| UCS | C1 ◁ C22×C4 ◁ G | |
| LECS | G ▷ C23 ▷ C1 | |
1363 conjugacy classes of subgroups.
| minimal degree | μ(G) = 20 |
| transitive degree | μt(G) = 128 |
A minimal faithful permutation representation — 5 generators on 20 points:
(1,2)(3,4)(5,6)(7,10)(8,9)(11,12);(2,4)(13,14)(15,19)(16,17)(18,20);(6,9)(10,12)(14,17)(18,19);(13,15,16,20)(14,18,17,19);(5,7,8,11)(6,10,9,12)Polycyclic presentation:
2^8|d^2=h,e^2=g,b^a=bf,c^a=cg,c^b=ch,d^b=dh76 conjugacy classes — view the full character table.
| maximal subgroup of | #115389, #193509, #193510, … |
| maximal normal subgroup of | #115389, #193509, #193510, … |
| maximal quotient of | #514155, #514207, #514394, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(256, 27897);