Its known that the smallest pyramid could be the pyramid of pepi 2 which is 172ft of height (52 meters) was made in 2250 bc (thats what I think) www.nationalgeographic.com
What Is The Smallest Pyramids In Egypt?
Of the 3 giant and best known Pyramids at Giza, Egypt, Menkaure is the smallest. The largest is Khufu, followed by Khafre pyramid.
Giza