https://sech.me/boinc/Amicable/ Sergei Chernykh Mon, 20 Apr 2026 08:17:02 GMT en-us https://sech.me/boinc/Amicable/rss_image.gif https://sech.me/boinc/Amicable/ https://sech.me/boinc/Amicable/forum_thread.php?id=362 https://sech.me/boinc/Amicable/forum_thread.php?id=362 21 is finished!

There are 4,810,863 21-digit amicable numbers, and 4,661,814 (96.9%) of them were found by BOINC volunteers. More than 60 million WUs were created and crunched through over the years.

Congratulations everyone and thank you all for your participation!

There are no plans to run the search up to 10²² at the moment - it will take more than 60 years, which is impractical. If, and that's a big IF, a new more efficient exhaustive search method is discovered in the future, then it will make sense to start the project again. ]]> Mon, 20 Apr 2026 08:17:02 GMT