![]() ![]() Iwao was inspired by their work, and she would go on to study with Takahashi at the university. Iwao knew about Takahashi when she was a kid, she says, because he held the world record at the time, along with Japanese mathematician Yasumasa Kanada. By 2009, Daisuke Takahashi at the University of Tsukuba was calculating about 2.6 trillion digits of pi with a supercomputer. ![]() But the birth of the digital computer in the 20th century supercharged efforts to estimate pi more precisely. Pi was first estimated thousands of years ago, and by the mid-20th century, mathematicians had calculated about 1,000 digits of the number, using a gear-driven calculator. "And I learned some people use computers to calculate millions and billions of digits of pi. "I liked computers when I was a kid," she tells NPR's Here & Now. The Google employee and her team calculated 31,415,926,535,897 digits of pi – crushing a 2016 record by trillions of digits.Īnd it all traces back to her childhood curiosity about the mathematical constant - the ratio of a circle's circumference to its diameter. Iwao set the newest Guinness World Record for the most accurate value of pi on Thursday. ![]() Now, she's computed over 31 trillion of its digits. Calculating more than 31 trillion digits of pi took months for Emma Haruka Iwao and her team, who beat the previous record for the most accurate value of pi by trillions of digits.Įmma Haruka Iwao grew up fascinated by pi. ![]()
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