IMPORTANT NOTICE: Starting from April 4th, 2001, the new Web address for this page is http://www.alpertron.com.ar/ECM.HTM. Please update your bookmarks, because this page will not be updated anymore.
Darío Alpern - Webmaster
If your Web visualization program accepts cookies, you can complete the factorization of a large number in several sessions. Your computer will remember the state of the factorization. You only have to reload this page.
The execution time depend on the magnitude of the second largest prime factor and on your computer speed.
Since all calculations are performed in your computer, you can disconnect it from the Internet while the factorization is in progress.
If you find any error, please send me an e-mail.