Pi world record calculation broken by Google employee Emma Haruka Iwao

Blanche Robertson
March 16, 2019

Emma Haruka Iwao, a developer in Google's Tokyo office, spent four months using 25 Google Cloud virtual machines to crunch pi down to 31.4 trillion digits-31,415,926,535,897 digits, to be exact, which coincides with the first 14 digits of pi's actual value.

"It was my childhood dream, a longtime dream, to break the world record for pi", Iwao said of her accomplishment.

They made their announcement today, on Pi day which falls on March 14th, or 3.14, the USA format of the date, in its most basic form. This is nearly 9 trillion digits more than the previous world record, which was set in November 2016 by Peter Trueb. Her calculation required, says Google in their blog on her achievement.

For Iwao and her team, she expressed appreciation for teachers and previous record holders who helped her reach this extraordinary milestone: "I was very fortunate that there were Japanese world record holders that I could relate to".

We achieved this feat using y-cruncher, a Pi-benchmark program developed by Alexander J. Yee, using a Google Compute Engine virtual machine cluster.

Pi, for people who've been out of school for long enough to forget, is the number given when you divide a circle's circumference (length around the outside) by its diameter (length across the middle). "The biggest challenge is you need a lot of storage".

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But Kerber - the eighth seed - rallied to secure a meeting with 2018 semi-finalist Williams, who defeated Mona Barthel 6-4 6-4. On this unexpected victory, Bencic said, "I was really happy with the performance".

When I think of pi, I think of three digits: 3.14. Another part of the Cloud is the sharing and Google have published the computed disks in their entirety as disk sets- if you want to have a look yourself and check it's correct you can grab them here.

The announcement comes on the annual Pi Day celebration, observed on 14 March.

The contstant is used in engineering, physics, supercomputing and space exploration - because its value can be used in calculations for waves and circles.

Her blog post also gives details of how customers can use the pi.delivery service, essentially to play and experiment with digits of Pi at the rate of $40 per day. It is significantly used in geometrical calculations.

Mathematicians have been able to calculate 40 digits of pi since the 1700s.

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