Tuesday, November 18, 2008

Mersenne

A Mersenne number is a number that can be expressed in the form 2 to the nth -1. Searching for higher and higher Mersenne primes is the unofficial national sport of mathematicians. The 45th and 46th Mersenne primes were found in 2008. The 46th has almost 13 million digits.
source Time magazine November 10, 2008.

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