Pi is the ratio of a circle’s circumference to its diameter, approximately 3.14 to 1 — Pi Day is 3/14 every year.
Pi is symbolized by π, the sixteenth letter of the Greek alphabet.
The digits for pi never end and they never repeat in any pattern:
Contests are held to see who can memorize the most digits to the right of the decimal point — a fun thing for dull men to do.
Here are the first 1,000 digits to the right of the decimal point — test yourself now, how many can you commit to memory?: