With over 6.4 billion digits in the constant, before it starts to recur,
Pi requires about 133 years
for a person to recite them all.
The founder of Pi, Archimedes of Syracuse, is known to have been so indulged in the work that he overlooked when the Roman invaded his city. It is often told how he yelled ‘do not touch my circles’ when a Roman soldier approached him, who then cut off his head. Dang!