Previous records were established using supercomputers, but Mr Bellard claims his method is 20 times more efficient.
The prior record of about 2.6 trillion digits, set in August 2009 by Daisuke Takahashi at the University of Tsukuba in Japan, took just 29 hours.
However, that work employed a supercomputer 2,000 times faster and thousands of times more expensive than the desktop Mr Bellard employed.
I blogged about that record at the time.
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