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-   -   Primo reservation thread (https://www.mersenneforum.org/showthread.php?t=24525)

wpolly 2019-06-18 10:27

Primo reservation thread
 
This thread is made following the suggestion of Paul Underwood in [URL="https://www.mersenneforum.org/showpost.php?p=519485&postcount=100"]this post[/URL], as a place of reserving large PRPs for ECPP testing.


I'll give a first call: I reserve Phi(32481,10) at 21600 digits.

paulunderwood 2019-08-01 21:27

From [url]https://www.mersenneforum.org/showpost.php?p=520442&postcount=310[/url]

I am reserving W35851

Done! [url]http://www.factordb.com/index.php?query=%282%5E35851%2B1%29%2F3%2F1184732147%2F1383891629171890065880777%2F54919454473787[/url]

Now doing: [url]http://factordb.com/index.php?id=1100000001336232261[/url] (23,451 digits) Done!

paulunderwood 2020-02-04 20:43

[url]https://www.mersenne.ca/exponent/78737[/url] PRP23654

sweety439 2020-02-17 16:10

Can someone reserve (51^4229-1)/50, (91^4421-1)/90 and 60^4663-59^4663?

paulunderwood 2020-02-26 10:40

[QUOTE=paulunderwood;536669][url]https://www.mersenne.ca/exponent/78737[/url] PRP23654[/QUOTE]

I am unreserving this number after a major catastrophic hardware failure -- the machine no longer posts.

It would be interesting to me for someone with a AMD 3990X to download the certificate for my recent 40k Primo proof from ellipsa.eu and run a verification on it. It took 15.5 hours on my now defunct Opteron class 48 cores at 2.2 GHz. A comparison would be very interesting.

Gelly 2020-05-26 00:54

[QUOTE=sweety439;537759]Can someone reserve (51^4229-1)/50, (91^4421-1)/90 and 60^4663-59^4663?[/QUOTE]

Already finished the first one, should be verified on FactorDB soonish! The other two are spun up on my system and should finish in a day or two. Hope this isn't crass to start work pre-reservation!

Gelly 2020-05-31 01:53

(51^4229-1)/50, (91^4421-1)/90 and 60^4663-59^4663 are all done! FactorDB finished with them and now they are recognized as prime.
[URL="http://factordb.com/index.php?id=1100000000651917018"]http://factordb.com/index.php?id=1100000000651917018[/URL]
[URL="http://factordb.com/index.php?id=1100000000685787852"]http://factordb.com/index.php?id=1100000000685787852[/URL]
[URL="http://factordb.com/index.php?id=1100000000467236538"]http://factordb.com/index.php?id=1100000000467236538[/URL]

After finishing that and presumably finishing my vanity prime test in a couple days, I'd like to reserve P = 3^45535+2 (PRP21726).

paulunderwood 2020-05-31 03:03

[QUOTE=Gelly;546843]

After finishing that and presumably finishing my vanity prime test in a couple days, I'd like to reserve P = 3^45535+2 (PRP21726).[/QUOTE]

Are you using a 32 core system?

Gelly 2020-06-23 04:57

[QUOTE=paulunderwood;546844]Are you using a 32 core system?[/QUOTE]

Yup! 3970x system, for everyone else on the forums who may be curious.

I finished 3^45535+2 in about 23 days, though there was a power outage, so precise numbers were lost, unfortunately. The certificate, once verified, will be [URL="http://factordb.com/index.php?id=1100000000213105555"]attached here![/URL]

I'll reserve 10^25333-2*10^5182-3 (PRP25333) because it looks silly and it'll force myself into 9th on ECPP.

Also...
[QUOTE=paulunderwood;538357]It would be interesting to me for someone with a AMD 3990X to download the certificate for my recent 40k Primo proof from ellipsa.eu and run a verification on it. It took 15.5 hours on my now defunct Opteron class 48 cores at 2.2 GHz. A comparison would be very interesting.[/QUOTE]

Running it with 3970x, it verified it in 37593s, or a touch less than 10.5 hours. I look forward to seeing results for a 3990x.

paulunderwood 2020-06-23 10:52

Congrats, Gelly, for the certification of 3^45535+2.

You might want to certify some t[URL="https://primes.utm.edu/top20/page.php?id=49"]op20 Mersnne co-factors[/URL]. The available ones are [URL="https://www.mersenne.ca/prp.php"]here[/URL]. If you are interested, I might have a backup of a partially done [URL="https://www.mersenne.ca/exponent/78737"]M78,737 [/URL]

Edit: I can't find a backup.

ryanp 2020-07-05 19:18

[QUOTE=paulunderwood;548863]Congrats, Gelly, for the certification of 3^45535+2.

You might want to certify some t[URL="https://primes.utm.edu/top20/page.php?id=49"]op20 Mersnne co-factors[/URL]. The available ones are [URL="https://www.mersenne.ca/prp.php"]here[/URL]. If you are interested, I might have a backup of a partially done [URL="https://www.mersenne.ca/exponent/78737"]M78,737 [/URL]

Edit: I can't find a backup.[/QUOTE]

I decided to fire up certification of M78737 with Primo, using 64 processes. Hopefully no one else is already running this!

The machine it's running on is a 3Ghz, 36-core/72-thread system. Anyone have a rough sense of how long this should take?

(Addendum: it would be great if Primo was open-source... I'd love to understand more about these "stk4321" processes it spawns. If I could farm these out to a cluster and then feed the results back in, presumably this could go a lot faster).


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