Finite Group DatabasebetaFinite Group Databasebeta| order | 256 |
| nilpotency class | 2 |
| isoclinism | isoclinic class of #34980 |
| automorphism | Aut(G) order 65536 |
| 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 | #2416 | C2 |
| LCS | G ▷ C23 ▷ C1 | |
| UCS | C1 ◁ C23 ◁ G | |
| LECS | G ▷ C23 ▷ C1 | |
1142 conjugacy classes of subgroups.
| minimal degree | μ(G) = 20 |
| transitive degree | μt(G) = 128 |
A minimal faithful permutation representation — 5 generators on 20 points:
(2,4)(7,11)(10,12)(13,14,18,17)(15,20,19,16);(6,9)(10,12)(13,15)(14,16)(17,20)(18,19);(1,2,3,4)(5,6)(7,10)(8,9)(11,12)(13,16,18,20)(14,19,17,15);(5,6)(7,10)(8,9)(11,12);(5,7)(6,10)(8,11)(9,12)(13,17,18,14)(15,20,19,16)Polycyclic presentation:
2^8|a^2=f,c^2=g,e^2=f,b^a=bf,c^a=cg,e^a=eh,c^b=ch,d^b=dh64 conjugacy classes — view the full character table.
| maximal subgroup of | #161583, #161867, #162359, … |
| maximal normal subgroup of | #161583, #161867, #162359, … |
| maximal quotient of | #516440, #516452, #516623, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(256, 27996);