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As Pi Day arrives once again, researchers at StorageReview, a leading enterprise IT publication, have a remarkable achievement to celebrate: a world-record calculation of the mathematical constant π (pi) to an astonishing 314 trillion digits.
That is 314,000,000,000,000 decimal places for a number that, according to NASA's Jet Propulsion Laboratory, only requires about 37 decimal places to calculate the circumference of the observable Universe to within the width of a hydrogen atom.
"StorageReview has reclaimed the pi crown with 314 trillion digits," wrote StorageReview lab director Kevin O'Brien in a blog post in December 2025.
"The result wasn't just beating the existing pi record; we obliterated it across numerous metrics. Nothing comes close to our run in terms of performance, power consumption, and most impressively, reliability. We are also the only large-scale pi world-record run without a second of downtime."
Unlike some previous π record attempts that relied on massive cloud computing resources or distributed clusters, this run was completed on a single Dell PowerEdge R7725 server by the StorageReview team.
The system used dual AMD EPYC processors and 40 high-capacity NVMe solid-state drives, 34 of which ran the specialized number-crunching software y-cruncher continuously for about 110 days to finish the calculation.
The race to surpass the previous π record using y-cruncher has been ongoing for over 15 years, beginning with a 5-trillion-digit calculation in 2010. The competition has been both intense and friendly, with many attempts deliberately incorporating a nod to π itself, often abbreviated as 3.14.
"In 2019, we calculated 31.4 trillion digits of π – a world record at the time," wrote Google's Emma Haruka Iwao in 2022 upon reaching the 100 trillion-digit milestone. "Then, in 2021, scientists at the University of Applied Sciences of the Grisons calculated another 31.4 trillion digits, bringing the total to 62.8 trillion decimal places."
Since then, efforts have focused more on reaching higher digit counts than on thematic significance, steadily pushing the record upward. StorageReview's latest achievement brings the race back to a pleasing symmetry.
So why undertake such a massive calculation?
At this scale, calculating π is less about mathematics and more about managing enormous amounts of data. Computing hundreds of trillions of digits generates vast temporary datasets, making the speed and capacity of the storage system the limiting factor rather than the processors themselves.
Even so, StorageReview's run was significantly more efficient than the 300-trillion-digit record set by Linus Media Group and storage company Kioxia in May 2025.
This efficiency partly stems from how the system handled storage. Instead of using a sprawling cluster, StorageReview configured its server so the NVMe drives connected directly to the processors via high-speed PCIe lanes, minimizing bottlenecks when writing and reading enormous files during the calculation.
This approach, the team explains, avoids the massive power and cooling costs associated with large shared-storage systems.
The 300-trillion-digit calculation by Linus Media Group relied on a much larger storage array and significantly higher power consumption, highlighting how brute force has often been the simplest way to push π calculations further.
With enough processors, memory, and storage bandwidth, researchers can keep extending the constant's digits – but doing so efficiently is a far greater challenge.
Related: Astronomers Discover 'Pi Earth' Exoplanet Orbits Its Star Once Every 3.14 Days
Efforts so far have shown that calculating π to ever more decimal places is relatively straightforward if you have enough hardware. StorageReview says its latest run raises the bar by prioritizing efficiency over sheer computing power.
Given how rapidly the π record continues to be broken and the shrinking intervals between records, the next breakthrough may come within months. But StorageReview has set a high standard.
"If someone wants to take the record, we would like to see them take the whole thing: more digits, less power, shorter wall time, and the same zero-downtime reliability," O'Brien wrote. "Until then, this is the benchmark for efficiency."
Well, 'tis the season. Any takers?
