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  Site last updated:
  Thu Mar 9 2006 10:22:44

mathematical mosaic by Eric Weisstein

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March 10, 2006
MATHWORLD HEADLINE NEWS

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43rd Mersenne Prime Found
Less than a year after the 42nd known Mersenne prime was reported (MathWorld headline news, February 26, 2005), the GIMPS project has discovered the 43rd known Mersenne prime: 230,402,457 - 1. The discovery was made by Drs. Curtis Cooper and Steven Boone, professors at Central Missouri State University on December 15, tentatively announced by GIMPS organizer George Woltman on December 19, and independently verified by Tony Reix on December 25. The new Mersenne prime has 9,152,052 decimal digits, making it not only the largest Mersenne prime known, but also the largest known prime of any type.

RSA-640 Factored
A team at the German Federal Agency for Information Technology Security (BSI) recently announced the factorization of the 193-digit number known as RSA-640. The team responsible for this factorization is the same one that previously factored the 174-digit number known as RSA-576 and the 200-digit number known as RSA-200. While RSA-640 has slightly fewer digits than the previously factored RSA-200, its factorization carries the additional benefit of a cash reward of $20,000 from RSA Laboratories as part of RSA's program to encourage research into computational number theory and the practical difficulty of factoring large integers.

Springer Publishes The Mathematica GuideBooks
After a nearly 15-year wait, the complete 4-volume set of Michael Trott's definitive Mathematica GuideBooks is now available. Described as a unique tour de force by prominent mathematicians, physicists, and visualization experts, the GuideBooks deal with educational, current research, and recreational problems from mathematics, computer science, computer graphics, and physics. The Mathematica GuideBooks are true mathematical gems. Overflowing with beautiful results, extensive literature references, and stunning graphics, these books provide a fascinating glimpse into the power of computational mathematics.

WolframTones Launched by Wolfram Research
A new system of computer-generated music known as WolframTones has been launched by Wolfram Research. WolframTones works by taking simple programs in the form of cellular automata and using music theory and Mathematica algorithms to render them as music. Each program can be viewed as defining a virtual world and WolframTones captures that computational world as a musical composition.

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