A Google employee has calculated the value of the number pi to a new world record of 31.4 trillion digits.
Emma Haruka Iwao, from Japan, used Google's Compute engine to help smash the previous record of around 22 trillion.
It was the first time the company's cloud service had been used for a calculation of this scale - 31,415,926,535,897 digits.
The calculation took 25 virtual machines 121 days to complete, with Google celebrating the news on National Pi Day.
It reportedly required 170 terabytes of data to complete, which is roughly equivalent to the amount of data in the entire Library of Congress print collections.
Ms Iwao, who has been fascinated by the number pi since she was a child, said of the achievement: "I was very fortunate that there were Japanese world record holders that I could relate to.
"I’m really happy to be one of the few women in computer science holding the record, and I hope I can show more people who want to work in the industry what’s possible.”
Pi is a mathematical constant and is the ratio of the length of a circle's circumference to its diameter - a value which is always the same for any circle
But we can never find the true meaning of pi, because it is what is known as an "irrational number".
The first three digits - 3.14 - are well known but the number is infinite and never-ending.
Mathematicians and scientists are constantly working to calculate more and more digits of pi, which is used to test supercomputers and in engineering, physics and space exploration.
Ms Iwao, who wants to expand her work, told BBC News: "I feel very surprised. I am still trying to adjust to the reality. The world record has been really hard."
