TITLE: Why mathematicians attempt to find more digits for $\pi$ since it has no last digit?
QUESTION [7 upvotes]: Many works and many research about irrationality of $\pi$ appear every year for predicting more digits for the tanscendental number which is $\pi$, The question that made me confused is :Why mathematicians  attempt to find more  digits for  $\pi$  since it has no last digit ?

REPLY [10 votes]: Several reasons.   

It's suspected but not known that $\pi$ is a normal number. Many
digits allow for statistical tests.
The decimal digit expansion of $\pi$ is used to test new computer hardware and software. See https://en.wikipedia.org/wiki/Super_PI .
Plain curiousity. Find youe birthday in $\pi$.
Because we can. Here are the first million digits.

Here's how $\pi$ starts in base $12$: