Skip to: Content
Skip to: Site Navigation
Skip to: Search

Pi Day: five fun facts about 3.14

March 14, or 3.14, is Pi Day. Get it? Pi Day celebrates all things related to the mathematical constant that measures the ratio of a circle's circumference to its diameter. Here are five things you should know about π. 

- Andrew MachContributor

Desktop computers in a trash can are shown in this 1999 photo illustration. (John Nordell / CSM)

2. Computers can't solve it

A pair of Japanese and US computer whizzes currently holds the record for calculating the most digits of pi – to five trillion decimal places. In 2010, Shigeru Kondo, a Japanese system engineer and Alexander Yee, an American computer science student, eclipsed the previous record of 2.7 trillion places. The pair used a desktop computer with 20 external hard disks that cost about $18,000 to build. It took 90 days to make their calculation. 

Read Comments

View reader comments | Comment on this story

  • Weekly review of global news and ideas
  • Balanced, insightful and trustworthy
  • Subscribe in print or digital

Special Offer