Three years after Seattle software developer Emma Haruka Iwao and her teammates at Google set the world record for calculating pi precisely, they’ve done it again. Thanks to Iwao and Google Cloud, we now know what pi equals to an incredible precision of 100 trillion digits.

Why pi?

Mathematicians have been working out the ratio of a circle’s circumference to its diameter for millennia, going back at least as far as the Babylonians (who figured it at 3.125). It’s important for scientists and engineers to know the irrational number’s value with a high degree of precision, but beyond a certain point, it’s really all about showing how well an algorithm or a computer network can handle more practical problems.