It's Pi Day!

Here are some fun pi facts to kick off 3/14!

1. The pi symbol is written as: π and is usually shortened to 3.14 or 22/7.
2. The record for the most digits of pi memorized belongs to Rajveer Meena of Vellore, India, who recited 70,000 decimal places of pi on March 21, 2015, according to Guinness World Records. Previously, Chao Lu, of China, who recited pi from memory to 67,890 places in 2005, held the record, according to Guinness World Records.
3. Because pi is an infinite number, humans will, by definition, never determine every single digit of pi.
4. Mathematicians still don't know whether pi belongs in the club of so-called normal numbers — or numbers that have the same frequency of all the digits — meaning that 0 through 9 each occur 10 percent of the time.
5. There's no finite, root-finding formula that can be used to calculate pi using rational numbers.
6. Pi Day is also Albert Einstein's birthday, along with the birthdays of Apollo 8 Commander Frank Borman, Astronomer Giovanni Schiaparelli, and last-man-on-the-moon Gene Cernan.
7. The record for calculating pi, as of 2010, is to 5 trillion digits (source: Gizmodo).
8. At position 763 there are six nines in a row, which is known as the Feynman Point.
9. In the Greek alphabet, pi (piwas) is the 16th letter. In the English alphabet, p is also the 16th letter.
10. Pi has been known and used by civilizations for almost 4,000 years.
11. Michael John Blake, an Austin-based musician, produced the musical representation of pi to 31 decimal places at 157 beats per minute, which is 314 halved.
12. In the TV show Star Trek episode “Wolf in the Fold,”  protagonist Mr. Spock fooled a devious computer into commanding it to compute pi’s last digit and destroys it. 
13. There is a website with a domain name “The Pi-Search Page” which searches a person’s birthday and other notable numbers in the digits of pi.
14. In many parts of the world, people, especially nerds and geeks, celebrate March 14 or 3/14 as pi day that corresponds to the first digits, 3.14. However, the celebration takes place at 1:59 pm following the symbol’s exact number 3.14159.
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Here are our sources for today's facts: LiveScience, NetworkWorld, & PiDay!