# Happy Pi Day

by Stephen Fluin 2010.03.14Happy Pi day to everyone. Today is the day where we celebrate an irrational but important mathematical constant. When I was in high school, I took the time to learn 200 digits of pi. Unfortunately years later I'm down to having the following memorized: 3.14159265358979323846264338327950288419716939937510582097494459230.

## Interesting Fact about Pi

You only need 27 digits of Pi in order to calculate the circumference of the universe to the nearest proton (assuming you know the diameter).

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