[转载]RSA-640 Factored
信息来源：邪恶八进制信息安全团队（<A href="http://www.eviloctal.com">www.eviloctal.com</A>）<BR>文章作者：Eric W. Weisstein<BR><BR>November 8, 2005--A team at the German Federal Agency for Information Technology Security (BSI) recently announced the factorization of the 193-digit number <BR><BLOCKQUOTE>310 7418240490 0437213507 5003588856 7930037346 0228427275 4572016194 8823206440 5180815045 5634682967 1723286782 4379162728 3803341547 1073108501 9195485290 0733772482 2783525742 3864540146 9173660247 7652346609 </BLOCKQUOTE><BR>
<P>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 (<I>MathWorld</I> headline news, <A href="http://mathworld.wolfram.com/news/2003-12-05/rsa/">December 5, 2003</A>) and the 200-digit number known as RSA-200 (<I>MathWorld</I> headline news, <A href="http://mathworld.wolfram.com/news/2005-05-10/rsa-200/">May 10, 2005</A>). </P><BR>
<P><A href="http://mathworld.wolfram.com/RSANumber.html">RSA numbers</A> are <A href="http://mathworld.wolfram.com/CompositeNumber.html">composite numbers</A> having exactly two <A href="http://mathworld.wolfram.com/PrimeFactor.html">prime factors</A> (i.e., so-called <A href="http://mathworld.wolfram.com/Semiprime.html">semiprimes</A>) that have been listed in the Factoring Challenge of RSA Security<SUP><FONT size=-1> 补上一个连接：
[url]http://mathworld.wolfram.com/news/2005-11-08/rsa-640/[/url]
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