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Top 50 interesting facts about Pi Day

Following is our collection of incredible Pi Day fact check articles and charts explaining insights about Pi Day. Sometimes weird, funny, and true Pi Day facts.

pi day facts
What is Pi Day?
  1. There was an attempt in Indiana to legislate Pi to the number 3.2. It was abandoned on the day of the vote by a professor who pointed out that it was lacking any basis in proof.

  2. This March 14 will be an extra special "Pi Day" because, for the only time this century, we will have 3/14/15 9:26:53!

  3. Known π (Pi) digits take up to 186 TB of data to be stored. It took 208 days to compute 13 trillion digits.

  4. In 2010, Alexander J. Yee & Shigeru K. broke a world record by calculating Pi to 5 trillion digits at home on a desktop computer (twin 6core Xeon processors, 96gb ram, and 20x 2TB hard drives.) It took 90 days; and 3.8 TB disk space was needed to store the final output of decimal and hex digits.

  5. Einstein was born on Pi Day, which is also the same day the famous picture of him sticking out his tongue was taken.

  6. That, in 1897, a bill was submitted to the Indiana General Assembly that would give a solution to squaring a circle and claimed Pi equaled 3.2, it did not pass largely due to the intervention of Professor C.A. Waldo, who happened to be at the legislature the day the bill was voted on

  7. In 1897 a bill was proposed in the Indiana General Assembly that would change the value of PI from it's mathematically correct irrational value to 3.2. However on the day of voting, Professor C.A. Waldo of Purdue University was in attendance and stopped the bill.

  8. About Ultimate Pi Day. 3/14/1592 is the largest number of digits on a calendar that corresponded with Pi.

  9. (In recognition of pi day) Suresh Kumar Sharma of India holds the record for most digits of pi memorized and recited at 70,030.

  10. The known number of decimal places in Pi was expanded from 22,459,157,718,361 to 31,415,926,535,897 on Pi Day 2019 [March 14th].

Data charts about Pi day

pi day fact data chart about In honor of Pi Day, chart of the ratio between a circle's ci
In honor of Pi Day, chart of the ratio between a circle's circumference and its diameter

pi day fact data chart about Happy Pi Day - Visualizing Pi vs e: The Race to Random
Happy Pi Day - Visualizing Pi vs e: The Race to Random

What are some fun facts about pi day?

Rhythm & Hues a VFX studio, won an Academy Award in visual effects for "Life of Pi" 11 days after declaring bankruptcy.

About a 1897 bill that proposed the value of pi be defined as 3.2, instead of the actual value, ~3.1415. The bill would have been passed into law had a mathematician from Purdue University not happened to be visiting on the day of the vote.

An amateur mathematician, Edward Goodwin, attempted to profit from his method to square the circle, which implied an incorrect value of Pi as 3.2. Professor Waldo of Purdue, who was coincidentally present in the legislature the day it went up for vote, intervened before it became law.

The number Pi is so uniformly random which is known from the frequency analysis of the first 200 billions digits where each digit occurs roughly 20 billion times or 10% of the time! Happy Pi Day :)

Albert Einstein was born on Pi Day, 1879

Europeans celebrate Pi Day on July 22 (22/7)

Pi Day this year can contain up to 10 consecutive digits of pi

Happy Pi Day, everyone! TIL of Akira Haraguchi, a Japanese man who memorized 111,700 digits of pi. He considers pi memorization to be a spiritual, meditative activity and tries to recite at least 15,000 digits every day.

Steve Callahan lived the real 'Life of Pi' and inspired the movie. It was a story of man who survived 76 days at sea on raft and inspired epic film.

March 14, 2015 is not your ordinary Pi Day. On 3/14/15 at 9:26:53, the date and time reflects the first 10 digits of Pi. This won't happen again in our lifetime.

Today its Pi (π) day, this date only comes once every 100 years - fact check

I learned that this year MIT admissions were released on the Pi day of the century: 3/14/15

Albert Einstein's Birthday is also Pi Day. - fact check

Pi Day =/= Pie Day. Pi Day is March 14. Pie Day is January 23. I'm just going to eat pie on both days.

The original lineup of Led Zepplin never performed 'Custard Pie' live as it was produced and only played the entire song just once live, as an acoustic version...so Happy Pi Day.

Pi Day' is celebrated on March 14. The celebration begins at 1:59 pm to make an appropriate 3.14159. Albert Einstein was born on Pi Day in 1879.

The first Pi day was held in the San Francisco Exploratorium by Larry Shaw - fact check

In Honor Of Pi Day, Here’s 4 Very Nerdy Raspberry Pi Projects - fact check

1000 digits of Pi memorized. Happy Pi Day! - fact check

Einstein was born on Pi day, Hawking died on Pi day, and both lived to the age of 76.

TDIH: March 14th 1879, Albert Einstein born in Ulm Germany. (Pi day)

March 14 marks Pi Day, an annual celebration of the mathematical sign pi. Founded in 1988 by physicist Larry Shaw, March 14 was selected because the numerical date (3.14) represents the first three digits of pi, and it also happens to be Albert Einstein’s birthday

March 14 marks Pi Day, an annual celebration of the mathematical sign Pi. Founded in 1988 by physicist Larry Shaw, March 14 was selected because the numerical date (3.14) represents the first three digits of pi, and it also happens to be Albert Einstein’s birthday.

Pi Day' is celebrated on March 14 (TODAY). It was chosen because it resembles 3.14). The official celebration begins at 1:59 p.m., to make an appropriate 3.14159 when combined with the date. Albert Einstein was born on Pi Day (3/14/1879) in Ulm Wurttemberg, Germany.

Today, March 14 is celebrated as 'Pi Day'. 3/14 was chosen because it resembles 3.14. The celebration begins at 1:59 pm to make an appropriate 3.14159 when combined with the date. Albert Einstein was born on π Day 3/14/1879.

Pi day infographics

pi day fact infographic about The most beautiful data I could imagine! Pie chart of my Cre
The most beautiful data I could imagine! Pie chart of my Credit Card Debt (took me 18 years!) on this Pi Day!