A Catalogue of Useless Facts

Pi (π)

Pi
- miscellaneous -

​​"Pi" (also depicted as the Greek letter "π" or as the decimal number "3.141592...") is an irrational number that represents the ratio between a circle's circumference and diameter. When expressed as a decimal, Pi has no finite conclusion and no repeating pattern.

Because of its infinite, non-repeating nature, Pi is often the subject of experimental or recreational computation for mathematicians. In 2010, one firm calculated Pi's decimal to two quadrillion (2,000,000,000,000,000) places -- an effort that took a thousand computers more than three weeks to complete.

As of 2017, the world record for the memorization and recollection of Pi is seventy-thousand digits -- a feat that took nearly ten hours to recite.

#073

Sources ▼

https://www.piday.org
https://www.bbc.com/news/technology-11313194
https://www.guinnessworldrecords.com/world-records/most-pi-places-memorised