Pi Revolution

Where math educators, publishers, and bookstores worldwide join forces on Pi Day to promote the beauty, ubiquity, and utility of the number π to millions of students, teachers, and parents.

Guesstimate how many students’ lives are annually being impacted positively thanks to the pi revolution.

by Fasters December 31, 2021

Pi Reincarnation

When the number π has undergone many transformations over the centuries from being merely associated to a circle to identifying itself with infinite series, the bell curve, and even the possible communication with extraterrestrials—from geometry and trigonometry to statistics and probability to infinity and astronomy.

Last March, the Dalai Lama wishes everyone at the math conference, “Happy Pi Reincarnation!”

by Fasters February 2, 2022

Pi

A number that is 3.1415926535897932384626...
You can memorize the first 50 digits and then say you know hundreds because people get bored of listening to you say numbers.

You: I know 200 digits of pi
Friend: Show me
You: 3.141592653589793238-
Friend: Wow
You: That wasn't all of them
Friend: I don't care

by Ranger Russet January 15, 2024

Pi Pa

A creepy ass grandpa, the type of grandpa that doesn't care about incest and talks like a smoker. Gets mad about everything and is horny all the fucking time.

"MOM!! Pi Pa is having the cat lick milk off his dick again!!!"

by traptears February 28, 2016

PI

PI is short for the Philippine Islands. Philippine Islands is the old name of the Republic of the Philippines. The Philippines was formerly known as Las Islas Filipinas, named after King Felipe II of Spain, when it was a colony of Spain from 1565 to 1898. Then it was Anglicized and it became known as the Philippine Islands when it became a U.S. territory shortly after the Spanish-American War of 1898. In 1946, upon independence from the U.S., it became a republic. The name of the country was then changed to the Republic of the Philippines.

Yo, I’m going back to the PI next year.

by The real Juan de la Cruz September 28, 2022

The Pi in Me

When there is a hidden element of π residing in all humans (or maybe even animals), whether they know it or not, regardless of their experience of school math—that pi-mind consciousness that intuitively seems to be guided by some Higher Being to convey new insights about the “sacred number” to humanity or any living entity.

When someone puts themselves in a Zen-like or transcendental state, the chances of them experiencing “The pi in me” aha! are higher than when they’re constantly being bombarded with a deluge of sensory input.

by Numerati March 22, 2025

Predictive Pi

When both mathematicians and AI could forecast new mathematical results on the number π based on published papers and from recently awarded pi-related research grants.

Predictive pi has somewhat democrarized previously secretive research conducted by both pure and applied mathematicians around the globe.

by Numerati August 19, 2025