Finite Group DatabasebetaFinite Group Databasebeta| order | 640 |
| automorphism | ? |
| homology | Abelianization (H1) = C24 · Schur multiplier (H2) = C25 |
No aliases for this group.
| Fitting | C2×C5×#137 ⋊ C2 |
| Sylow | C5 ⋊ #3270 |
472 conjugacy classes of subgroups.
| transitive degree | μt(G) = 320 |
Polycyclic presentation:
2^7,5|b^2=g,d^2=g,e^2=g,b^a=be,c^a=cf,e^a=eg,d^b=de,e^b=eg,h^c=h^4,e^d=eg73 conjugacy classes — view the full character table.
| maximal subgroup of | D5×#3270, C2×#10615720, #12974372, … |
| maximal normal subgroup of | D5×#3270, C2×#10615720, #12974372, … |
| maximal quotient of | #12088731, #12088851, #12089031, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(640, 17802);