This graph is the unique rank-4 $\mathrm{SRG}(300,104,28,40)$.
| Number of vertices: | $300$ |
| Diameter: | $2$ |
| Intersection array: | $\{104,75;1,40\}$ |
| Spectrum: | $104^1 4^{234} (-16)^{65}$ |
| Automorphism group: | $\mathrm{PGO}(5,5) \cong \mathrm{PSp}(4,5).2$ |
| Distance-transitive: | No |
| Primitive |