Emma Haruka Iwao, a Google employee from Japan, found the new digits with the help of the company's cloud computing service.
Pi is the number you get when you divide a circle's circumference by its diameter.
The first digits, 3.14, are well known but the number is infinitely long.
Extending the known sequence of digits in pi is very difficult because the number follows no set pattern.
Pi is used in engineering, physics, supercomputing and space exploration - because its value can be used in calculations for waves, circles and cylinders.