The 10¹⁷ includes that factor. 10¹⁰ neurons by 10⁵ synapses by 10² Hz. It seems unlikely to me that the meaningful temporal resolution is going to be 1000x that

The 10¹⁷ includes that factor. 10¹⁰ neurons by 10⁵ synapses by 10² Hz. It seems unlikely to me that the meaningful temporal resolution is going to be 1000x that of the firing rate, but if you want to add a factor of 10 or so I wouldn't object.