13million-digit prime number discovered!

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	13million-digit prime number discovered!

wintertown

9-29-2008 8:13 AM

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<div style="margin: 12px 0px; font-family: arial; color: #333333; background: #ffffff; border: solid 4px #e5e5e5; width: 100%; clear: left;"><div class="CM_CTB_Content_Wrap" style="margin: 0px; padding: 0px;background-color: #ffffff;"><div style="border-bottom: solid 1px #dcdcdc; white-space: nowrap; margin-bottom: 8px; background-color: #eeeeee ;background-image: url(http://clipmarks.com/images/source-bg.gif); background-repeat: repeat-x; height: 24px; line-height: 24px; vertical-align: middle; padding-bottom: 4px; color: #666666; font-size: 10px;" ><a href="http://clipmarks.com/clip-to-blog/" title="see clips that are hot right now"><img src="http://content.clipmarks.com/blog_embed/35d3f8ab-612f-4d57-b12c-4fe7d13261af/9E69083B-29DA-433D-90B1-E27DD2D99F3B/" alt="" width="19" height="19" border="0" style="vertical-align: middle; margin: 0px 4px; display: inline; border: none; float:none;" /></a>clipped from <a title="http://news.yahoo.com/s/ap/prime_number_prize" href="http://news.yahoo.com/s/ap/prime_number_prize" style="font-size: 11px;">news.yahoo.com</a></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://news.yahoo.com/s/ap/prime_number_prize"><P>The group found the 46th known <SPAN id="lw_1222642122_2" class="yshortcuts">Mersenne prime</SPAN> last month on a network of 75 computers running <SPAN id="lw_1222642122_3" class="yshortcuts">Windows XP</SPAN>. The number was verified by a different computer system running a different algorithm.</P></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://news.yahoo.com/s/ap/prime_number_prize"><P>It's the eighth Mersenne prime discovered at UCLA.</P></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://news.yahoo.com/s/ap/prime_number_prize">Mersenne primes — named for their discoverer, 17th century <SPAN id="lw_1222642122_4" class="yshortcuts">French mathematician Marin Mersenne</SPAN> — are expressed as 2P-1, or two to the power of "P" minus one. P is itself a prime number.</blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://news.yahoo.com/s/ap/prime_number_prize"><P>Thousands of people around the world have been participating in the <SPAN id="lw_1222642122_5" class="yshortcuts">Great Internet Mersenne Prime Search</SPAN>, or GIMPS, a <SPAN id="lw_1222642122_6" class="yshortcuts">cooperative system</SPAN> in which underused computing power is harnessed to perform the calculations needed to find and verify Mersenne primes.</P></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://news.yahoo.com/s/ap/prime_number_prize"><P>The $100,000 prize is being offered by the <SPAN id="lw_1222642122_7" class="yshortcuts">Electronic Frontier Foundation</SPAN> for finding the first Mersenne prime with more than 10 million digits. The foundation supports individual rights on the Internet and set up the prime number prize to promote cooperative computing using the Web.</P></blockquote></div><div style="margin: 0px 6px 6px 4px;"><table style="font-size: 11px;border-spacing: 0px;padding: 0px;" cellpadding="0" cellspacing="0" width="100%"><tr><td style="background:transparent;border-width:0px;padding:0px;">&nbsp;</td><td align="right" style="background:transparent;border-width:0px;padding:0px;width:107px" width="107"><a href="http://clipmarks.com/share/9E69083B-29DA-433D-90B1-E27DD2D99F3B/blog/" title="blog or email this clip"><img src="http://content6.clipmarks.com/images/c2b-foot.png" border="0" alt="blog it" width="107" height="17" style="border-width:0px;padding:0px;margin:0px;" /></a></td></tr></table></div></div>

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