There are few numbers in math as famous as Pi. You probably remember it from school as 3.14, but that is just the beginning. Pi is the number that describes the relationship between the circumference of a circle and its diameter. No matter how large or small the circle is, that ratio is always the same. The catch is that Pi never ends and never repeats. The digits go on forever, which is why mathematicians and computer scientists love trying to calculate more and more of them.
Now, to celebrate Pi Day (March 14th) cloud storage company Backblaze is helping share one of the largest Pi calculations ever completed. The company announced a partnership with StorageReview to make 314 trillion digits of Pi available to the public. The data was originally calculated by StorageReview in December 2025 after months of intense computation designed to push modern hardware to its limits.
“We’ve always had a soft spot in our heart for innovators, record breakers, and people doing cool stuff,” said Yev Pusin, Head of Communications at Backblaze. “When I heard StorageReview calculated pi to the 314 trillionth digit, I knew we could serve it.”
The number itself is hard to wrap your head around. The dataset that Backblaze is hosting contains more than 130TB of Pi digits. The full working dataset used during the calculation was even larger. When checkpoints and intermediate data were included, the project generated about 2.1PB of data. For public access, the Pi digits are broken into roughly 200GB chunks, making it at least somewhat practical for researchers or enthusiasts to download portions of the archive.
StorageReview founder Brian Beeler said the project was about more than simply chasing a mathematical milestone.
“Pushing π to 314 trillion digits was far more than a headline number. It was a sustained, months-long computational challenge that stressed every layer of modern infrastructure, from high core-count CPUs to massive high-speed storage, and it gave us valuable insight into how extreme, real-world workloads behave at scale. Making this dataset available in the Backblaze cloud takes the project a step further by opening access to one of the largest raw outputs ever generated in a single-system calculation. Hosting multi-petabyte files for the broader community is no small feat, and we appreciate Backblaze stepping up to ensure researchers, developers, and enthusiasts can explore and build on this record-setting achievement.”
Projects like this have a long tradition in computing. Calculating Pi to massive lengths is not about discovering new math. Instead, it is a way to test the limits of modern computing systems. These workloads hammer processors, storage systems, and memory for months at a time. If something breaks or slows down, the computation will fail.
In other words, calculating Pi at this scale acts as a kind of endurance test for hardware and infrastructure. It reveals how well CPUs, flash storage, and software stacks hold up under sustained pressure. That is part of what made this particular run interesting. According to StorageReview, the system involved high-density flash storage and careful workload tuning that allowed it to outperform even some large cloud platforms attempting the same record.
Backblaze says making the dataset available in its B2 cloud storage platform allows researchers, developers, and curious tech enthusiasts to explore the results themselves. Of course, downloading the entire 130TB dataset is not exactly something most people will attempt at home. Still, even accessing a small portion gives a sense of just how enormous the computation really was.
Pi may start with the familiar digits 3.14159, but this project reminds us that the number goes far beyond what most of us ever see. Somewhere inside a massive cloud dataset now sit 314 trillion digits of that endless sequence, waiting for anyone curious enough to explore them.
Okay. While this is kinda cool. Calculating pi to 314 trillion digits is a cool thing to accomplish. Hosting the whole dataset, I’m not sure what the purpose of that is beyond bragging rights?
I have used million and billion digits of PI to test errors in communication links. I send a million or billion digits of PI from one end and verify it at the other end. Since it is universally available, I don’t have to send large test data by some other means (like sending it by physical storage).
why wasn’t it 3.14159…. x 10^14 digits?
“The digits go on forever, which is why mathematicians and computer scientists love trying to calculate more and more of them.”
Well, the digits of any irrational number go on forever in what seem to random sequences. Pi is not special in that sense. It is just that pi appears practically everywhere in mathematics and physics: that makes it special.