Here the longitude, latitude and the GPS coordinates of Memphis (TN) easy and free to find out!
Geniuses is the most usual plural form of genius. Genii is the Latin plural. Genii refers to a guiding spirit present from birth. I took poetic liberty by using genii in two lines of a poem I wrote: Weird creative geniI.
On the Wechsler,  that would be a score of 132. The term genius is subjective and  individuals who are said to have IQs above the ceiling of  conventional IQ tests have to be studied on an individual basis by  experts.