Finite Group DatabasebetaFinite Group Databasebeta| order | 640 |
| automorphism | ? |
| homology | Abelianization (H1) = C24 · Schur multiplier (H2) = C25 |
No aliases for this group.
| Fitting | C2×C5×#121 ⋊ C2 |
| Sylow | C5 ⋊ #3055 |
548 conjugacy classes of subgroups.
| transitive degree | μt(G) = 160 |
Polycyclic presentation:
2^7,5|b^2=e,e^2=g,b^a=be,c^a=cf,e^a=eg,d^b=dg,h^b=h^488 conjugacy classes — view the full character table.
| maximal subgroup of | #12136726, #12136730, #12136748, … |
| maximal normal subgroup of | #12136726, #12136730, #12136748, … |
| maximal quotient of | #12082064, #12082086, #12082108, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(640, 16434);