Finite Group DatabasebetaFinite Group Databasebeta| order | 640 |
| automorphism | ? |
| homology | Abelianization (H1) = C23×C4 · Schur multiplier (H2) = C26 |
No aliases for this group.
| Fitting | C2×C4×C5×D4 ⋊ C2 |
| Sylow | C5 ⋊ #2361 |
788 conjugacy classes of subgroups.
| transitive degree | μt(G) = 320 |
Polycyclic presentation:
2^7,5|a^2=g,b^2=eg,d^2=e,b^a=be,c^a=cf,d^b=de,h^c=h^4130 conjugacy classes — view the full character table.
| maximal subgroup of | #12119566, #12119575, #12119611, … |
| maximal normal subgroup of | #12119566, #12119575, #12119611, … |
| maximal quotient of | C4⋊C4×#685, #12020797, #12020865, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(640, 16212);