Prime Curios!: 2143

2143
(another Prime Pages' Curiosity)

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For a good approximation of pi, take the square root of the square root of the fraction 2143/22. It is accurate to eight decimal places. (Note that the numerator of this fraction is a prime number.) [Dobb]

Submitted: 2002-05-07 00:19:03; Last Modified: 2008-01-30 11:28:00.