7 facts about Pi

1. Pi day is celebrated on March 14 at the Exploratorium in San Francisco at 1:59 PST (3/14 1:59)
2. There is no zero in the first 31 digits of Pi.
3. The first person to use the Greek letter Pi was Welshman William Jones in 1706. He used it as an abbreviation for the periphery of a circle with unit diameter.
4. The first time 666 appears is at position 2440.
5. If you take 10 million random digits, statistically on average you would expect 200 cases where you get 5 digits in a row the same. If you take 10 million digits of Pi, you get exactly 200.
6. The Pi memory champion is Hiroyoki Gotu, who memorised an amasing 42,000 digits.
7. The Babylonians found the first known value for Pi in around 2000BC - They used (25/8).