# Latest Numerical approximations of π Stories

Designated by the U.S. House of Representatives in 2009, Pi Day (March 14) is gaining traction as a celebration of mathematics and science, as celebrations take place in classrooms and science institutions across the country. The math-themed Radian Watch makes is a perfect Pi Day accessory Philadelphia, PA (PRWEB) March 09, 2012 Catching the spirit of Pi Day, The Cadence Watch Company is pleased to announce the launch of their mathematically inspired Radian Watch. “There is nothing...

Computing power leads to insights In his 1989 book "The Emperor's New Mind", Roger Penrose commented on the limitations on human knowledge with a striking example: He conjectured that we would most likely never know whether a string of 10 consecutive 7s appears in the digital expansion of the number pi. Just 8 years later, Yasumasa Kanada used a computer to find exactly that string, starting at the 22869046249th digit of pi. Penrose was certainly not alone in his inability to foresee the...

A researcher working for technology firm Yahoo has calculated the 2,000,000,000,000,000th digit of pi, more than doubling the previous record. Nicholas Sze used Yahoo's Hadoop cloud computing technology to come up with the unimaginable figure. The computation took 23 days using 1,000 Yahoo computers, racking up the equivalent of more than 500 years of efforts from a single computer. The core of the calculation made use of an approach called MapReduce -- originally developed by Google --...

Japanese and U.S. computer whizzes say they have calculated pi to five trillion decimal places, which is a number that could beat a previous record set by a French software engineer if verified. "We believe our achievement sets a new record," Japanese system engineer Shigeru Kondo said, The 54-year-old Japanese man teamed up with Alexander Yee, a U.S. computer science student, to set out to try and calculate the constant that has fascinated mathematicians for millennia. Pi is the ratio of...

Computer scientist Fabrice Bellard said he has computed the mathematical constant pi to nearly 2.7 trillion digits, some 123 billion more than the previous record, BBC News reported. Bellard used a desktop computer to perform the calculation, taking a total of 131 days to complete and check the result. He said his version of pi takes over a terabyte of hard disk space to store. Bellard also claims his method is 20 times more efficient than previous records established using supercomputers....

On Tuesday, math lovers across the country are celebrating national Square Root Day, a holiday that comes around only when the day and the month are both the square root of the last two digits of the current year. For example, today's date "“ March 3, 2009, can numerically be expressed as 03/03/09. The last time square root day was celebrated was February 2, 2004 (2/2/04), and the next time won't occur until April 4, 2016 (4/4/16). To celebrate "Squared Day", it is suggested that...

SALEM, Va. (AP) - A high school student Tuesday recited 8,784 digits of Pi - the non-repeating and non-terminating decimal - likely placing him among the top Pi-reciters in the world. Gaurav Rajav, 15, had hoped to recite 10,790 digits and set a new record in the United States and North America. But he remembered enough to potentially place third in national and North American Pi recitation and 12th in the world. His ranking should be verified by the Pi World Ranking List within two months....

WEST LAFAYETTE, Ind. -- If you wanted a random number, historically you could do worse than to pick a sequence from the string of digits in pi. But Purdue University scientists now say other sources might be better. Physicists including Purdue's Ephraim Fischbach have completed a study comparing the "randomness" in pi to that produced by 30 software random number generators and one chaos-generating physical machine. After conducting several tests, they have found that while sequences of...

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