Finite Group DatabasebetaFinite Group Databasebeta| order | 640 |
| automorphism | ? |
| homology | Abelianization (H1) = C22×C4 · Schur multiplier (H2) = C2×C4 |
No aliases for this group.
| Sylow | C5 ⋊ #1838 |
180 conjugacy classes of subgroups.
| transitive degree | μt(G) = 320 |
Polycyclic presentation:
2^7,5|a^2=f,b^2=e,c^2=d,d^2=g,e^2=g,f^2=g,b^a=bd,c^a=ce,d^a=dg,e^a=eg,c^b=cg,h^b=h^4,h^c=h^488 conjugacy classes — view the full character table.
| maximal subgroup of | #11986712, #11993695, #11993696, … |
| maximal normal subgroup of | #11986712, #11993695, #11993696, … |
| maximal quotient of | #11992966, #11992968, #11992970, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(640, 3392);