Finite Group DatabasebetaFinite Group Databasebeta| order | 640 |
| automorphism | ? |
| homology | Abelianization (H1) = C23×C4 · Schur multiplier (H2) = C24 |
No aliases for this group.
| Sylow | C5 ⋊ #2968 |
| subgroup | G/H | |
|---|---|---|
| center, Frattini | C22 | C23×AGL(1,𝔽5) |
| commutator, socle | C22×C5 | C23×C4 |
| Fitting, prime radical | C5×#121 | C4 |
| cosocle | C2×Dic5 | C24 |
| hypercenter | #121 | AGL(1,𝔽5) |
| hypocenter | C5 | #2968 |
| LCS | G ▷ C22×C5 ▷ C5 | |
| UCS | C1 ◁ C22 ◁ #121 | |
372 conjugacy classes of subgroups.
| transitive degree | μt(G) = 320 |
Polycyclic presentation:
2^7,5|a^2=f,c^2=f,d^2=e,f^2=g,b^a=be,h^a=h^2,d^c=dg,h^c=h^2,h^d=h^4,h^f=h^464 conjugacy classes — view the full character table.
| maximal subgroup of | #13019988, #13019990, #13019992, … |
| maximal normal subgroup of | #13019988, #13019990, #13019992, … |
| maximal quotient of | #13033688, #13033706, #13033763, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(640, 19317);