Part 3 of the 10^21 search has started

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Sergei Chernykh
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Message 2134 - Posted: 14 Oct 2025, 8:41:44 UTC - in response to Message 2133.  
Last modified: 14 Oct 2025, 8:43:29 UTC

The WUs for part 4 should take 5-6 months to process at the current speed. So maybe you will be able to get to 1 billion :)
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Speedy

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Message 2135 - Posted: 15 Oct 2025, 7:25:16 UTC - in response to Message 2134.  

The WUs for part 4 should take 5-6 months to process at the current speed. So maybe you will be able to get to 1 billion :)

Thanks heaps, appreciate the feedback
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Allen Paschke

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Message 2136 - Posted: 16 Oct 2025, 19:42:47 UTC - in response to Message 2135.  

What I'm hearing is when Part 4 of 10^21 is finished, Amicable Numbers will most likely be finished. IF I person is trying to obtain a badge, they have about 6 months to obtain it. Due to the time to complete 10^22, there are no plans to initiate 10^22.

I would like to thank you for all your efforts with 10^20 and 10^21. I also appreciate your thoroughness. GOOD JOB!
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Profile [AF>Amis des Lapins] Bipleouf

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Message 2143 - Posted: 2 Nov 2025, 14:12:37 UTC

Bonjour,
La partie 3 arrive à sa fin.
Quelle va être la suite du programme?
Une partie 4?
Ou continuons-nous une autre tranche de calcul?
Outre autre chose!?
Cordialement,
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Sergei Chernykh
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Message 2144 - Posted: 2 Nov 2025, 18:10:08 UTC - in response to Message 2143.  

There will be part 4 and it will take approximately 6 months. There are no other plans after that, so the project will most likely finish.
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cppuf

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Message 2145 - Posted: 5 Nov 2025, 16:19:31 UTC - in response to Message 2136.  
Last modified: 5 Nov 2025, 16:20:09 UTC

so it means its unlikely that i can find an amicable pair.so sad .come too late
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Message 2152 - Posted: 4 Jan 2026, 5:18:11 UTC

Looks like Part 4 of 10^21 will be finished in late February 2026:

https://sech.me/boinc/Amicable/server_status.php
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Message 2198 - Posted: 30 Jan 2026, 17:20:23 UTC

And then?
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Message 2199 - Posted: 30 Jan 2026, 19:52:37 UTC - in response to Message 2198.  
Last modified: 30 Jan 2026, 20:21:26 UTC

And then?


Look at Sergie's post right above his. How can you have not read that!
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Stiwi

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Message 2200 - Posted: 30 Jan 2026, 23:06:07 UTC - in response to Message 2198.  

And then?


Then switch to another boinc project^^
Maybe numberfields@home is a good choice.
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vonboedefeldt

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Message 2201 - Posted: 31 Jan 2026, 9:01:27 UTC - in response to Message 2199.  

If there is a part 4, there might be a part 5, numbers enough!
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bluestang

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Message 2203 - Posted: 31 Jan 2026, 20:51:44 UTC
Last modified: 31 Jan 2026, 20:52:18 UTC

Straight from Sergei..

https://sech.me/boinc/Amicable/forum_thread.php?id=300&postid=2144#2144
There will be part 4 and it will take approximately 6 months. There are no other plans after that, so the project will most likely finish.


I didn't think it was too difficult to understand.
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2WWwHyGa1xGHngJKFRTcc5gCw2M6

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Message 2206 - Posted: 1 Feb 2026, 16:41:52 UTC - in response to Message 2203.  

I remember crunching Amicable Numbers years ago on a 1050 Ti. It's awesome to see the project come to a close possibly in 2026.
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Message 2244 - Posted: 21 Feb 2026, 12:59:24 UTC
Last modified: 21 Feb 2026, 13:05:49 UTC

In early January, the server predicted that Part 4 would end in late February. Now the server is predicting that Part 4 will end in late March.

The predicted end date is changing rather rapidly. On February 9, the server predicted that Part 4 would end on March 18. Today (February 21), the server predicted that Part 4 will end on March 29.

I wonder what is happening. Is there more work than originally anticipated? Are crunchers leaving the project? Are crunchers getting less efficient?
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Message 2245 - Posted: 21 Feb 2026, 13:05:32 UTC - in response to Message 2244.  

In early January, the server predicted that Part 4 would end in late February. Now the server is predicting that Part 4 will end in late March.

The predicted end date is changing rather rapidly. On February 9, the server predicted that Part 4 would end on March 18. Today (February 21), the server predicted that Part 4 will end on March 29.

I wonder what is happening. Is there more work than originally anticipated? Are crunchers leaving the project? Are crunchers getting less efficient?


Part of the explanation might be found here: https://grafana.kiska.pw/d/boinc/boinc?orgId=1&var-project=Amicable&from=now-7d&to=now. It looks like the project was consuming about 16 TFLOPS on February 15/16. That value has trended downward and is now at ~11.5 TFLOPS.
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Profile Bill F
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Message 2246 - Posted: 22 Feb 2026, 3:46:38 UTC

It's all fine regardless of the reason if the project runs a little longer it's more tasks for the rest of us to enjoy.

Thanks
Bill F
In October 1969 I took an oath to support and defend the Constitution of the United States against all enemies, foreign and domestic;
There was no expiration date.


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Message 2248 - Posted: 23 Feb 2026, 17:48:10 UTC

When this project is done next month my computers will be going back to PrimeGrid where their is enough work for years.
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Message 2249 - Posted: 24 Feb 2026, 2:16:13 UTC - in response to Message 2245.  


Part of the explanation might be found here: https://grafana.kiska.pw/d/boinc/boinc?orgId=1&var-project=Amicable&from=now-7d&to=now. It looks like the project was consuming about 16 TFLOPS on February 15/16. That value has trended downward and is now at ~11.5 TFLOPS.

Currently at 13.943 TFLOPS an increase of 2.4 TFLOPS in almost as many days. I feel if everyone was to return to work and allow the server to catch up there will be less strain on the server hopefully allowing server to process things quicker. Just my two cents
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Allen Paschke

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Message 2253 - Posted: 1 Mar 2026, 18:07:19 UTC - in response to Message 2245.  

Many people switched their GPUs from Amicable Numbers to PrimeGrid for the Tour de Primes tournament which ran the entire month of February. They are now returning to Amicable Numbers.
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Message 2254 - Posted: 2 Mar 2026, 21:51:52 UTC - in response to Message 2253.  

Many people switched their GPUs from Amicable Numbers to PrimeGrid for the Tour de Primes tournament which ran the entire month of February. They are now returning to Amicable Numbers.

Hopefully you are right, as of this post there has been only a minor increase. To be honest the completion date has gone from the 28th to 29 March 2026
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