Finite Group DatabasebetaFinite Group Databasebeta| order | 640 |
| automorphism | ? |
| homology | Abelianization (H1) = C22×C42 · Schur multiplier (H2) = C24×C4 |
No aliases for this group.
| Fitting | C2×C5×#97 ⋊ C2 |
| Sylow | C5 ⋊ #2875 |
556 conjugacy classes of subgroups.
| transitive degree | μt(G) = 320 |
Polycyclic presentation:
2^7,5|a^2=e,b^2=f,e^2=g,b^a=bg,d^c=dg,h^c=h^4148 conjugacy classes — view the full character table.
| maximal subgroup of | #11996108, #11996112, #11996115, … |
| maximal normal subgroup of | #11996108, #11996112, #11996115, … |
| maximal quotient of | #12064890, #12064909, #12064971, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(640, 12299);