From "Rhind Papyrus" from 1600 BC we know that the Egyptians had an estimat for Pi, namely 3.16, meaning they knew only 2 digits of pi. According to this artcile they knew more digits, at least 4 digits of Pi. Around 200 BC Archimedes estimate pi to 22/7 which is 3 digits of pi. This indicate that the Egyptians knew more digits 2000 years before Archimedes, however, it's not clear to me how many digits they actually knew.

http://www.bcamt.ca/wp-content/uploads/2015/03/Yochim.pdf

From "Rhind Papyrus" from 1600 BC we know that the Egyptians had an estimate for pi, namely 3.16, meaning they knew only 2 digits of pi. According to this article they knew more digits, at least 4 digits of pi. Around 200 BC Archimedes estimated pi to 22/7 which is 3 digits of pi. This indicates that the Egyptians knew more digits 2000 years before Archimedes, however, it's not clear to me how many digits they actually knew.

http://www.bcamt.ca/wp-content/uploads/2015/03/Yochim.pdf