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Forum: No Prime Left Behind 2021-03-02, 19:56
Replies: 1,495
Views: 181,765
Posted By gd_barnes
735*2^1588511-1 is prime

735*2^1588511-1 is prime
Forum: No Prime Left Behind 2021-02-27, 20:49
Replies: 1,495
Views: 181,765
Posted By gd_barnes
813*2^1585226-1 is prime

813*2^1585226-1 is prime
Forum: No Prime Left Behind 2021-02-26, 08:50
Replies: 1,495
Views: 181,765
Posted By gd_barnes
667*2^1583929-1 is prime

667*2^1583929-1 is prime
Forum: No Prime Left Behind 2021-02-20, 20:50
Replies: 1,495
Views: 181,765
Posted By gd_barnes
669*2^1577699-1 is prime

669*2^1577699-1 is prime
Forum: Conjectures 'R Us 2021-02-19, 09:30
Replies: 299
Sticky: News
Views: 48,404
Posted By gd_barnes
I will be out of town until March 5th. I am...

I will be out of town until March 5th. I am keeping the web pages updated locally while I am gone. They will be uploaded to the server after I get back.
Forum: Conjectures 'R Us 2021-02-15, 10:59
Replies: 906
Views: 94,282
Posted By gd_barnes
They are probably so new that they haven't been...

They are probably so new that they haven't been announced yet.

As best as I can tell Ryan works entirely independently of any project. None of his proof codes at top-5000 have a project ID in...
Forum: Conjectures 'R Us 2021-02-15, 03:21
Replies: 906
Views: 94,282
Posted By gd_barnes
...and just like that... Even bigger news...

...and just like that...

Even bigger news from Ryan Propper:

2293*2^12918431-1 is prime!!

See: https://primes.utm.edu/primes/page.php?id=131882

So...within less than a week of each other...
Forum: No Prime Left Behind 2021-02-15, 03:00
Replies: 251
Sticky: News
Views: 62,107
Posted By gd_barnes
Due to PrimeGrid's "Tour de Primes" for all of...

Due to PrimeGrid's "Tour de Primes" for all of the month of February they are finding a tremendous number of top-5000 primes. (~15-20 per day!) For that reason our leading edge for the 14th drive...
Forum: No Prime Left Behind 2021-02-15, 02:46
Replies: 1,495
Views: 181,765
Posted By gd_barnes
691*2^1571333-1 is prime

691*2^1571333-1 is prime
Forum: Riesel Prime Search 2021-02-15, 00:59
Replies: 1,021
Views: 123,839
Posted By gd_barnes
I hit refresh multiple times over a couple hours...

I hit refresh multiple times over a couple hours last night and it would not update. It's updated now. Weird.
Forum: Riesel Prime Search 2021-02-14, 12:56
Replies: 1,021
Views: 123,839
Posted By gd_barnes
I am not seeing any updates here: ...

I am not seeing any updates here:
https://www.rieselprime.de/ziki/Riesel_k%3D1-300

Am I looking in the right place?
Forum: Riesel Prime Search 2021-02-13, 21:43
Replies: 1,021
Views: 123,839
Posted By gd_barnes
Karsten, As per Curtis' post, you can...

Karsten,

As per Curtis' post, you can release k=207 and k=221 and reserve k=31 for him.

All were previously reserved by sjtjung.
Forum: Riesel Prime Search 2021-02-13, 21:38
Replies: 1,021
Views: 123,839
Posted By gd_barnes
k=221 is complete to n=2M; no primes were found...

k=221 is complete to n=2M; no primes were found for n=1M-2M; the k is released.

Since this was mostly a doublecheck, results were added to post #57 in the doublecheck thread.
Forum: Riesel Prime Search 2021-02-13, 01:50
Replies: 1,021
Views: 123,839
Posted By gd_barnes
Status on follow ups: I got a PM response...

Status on follow ups:

I got a PM response from Chaos. He is going to keep k=213. I have asked him to report his search depth here. He has reported several top-5000 primes for n>2M. I let him...
Forum: Conjectures 'R Us 2021-02-12, 22:01
Replies: 906
Views: 94,282
Posted By gd_barnes
47 remain for the original Riesel problem. ...

47 remain for the original Riesel problem.

Here it is 49 remaining including the two even k's.
Forum: Riesel Prime Search 2021-02-12, 21:48
Replies: 1,021
Views: 123,839
Posted By gd_barnes
Karsten, k=255 was already tested to n=2M. ...

Karsten,

k=255 was already tested to n=2M.

See this post:
https://mersenneforum.org/showpost.php?p=450194&postcount=901

See the final post in this thread:...
Forum: Conjectures 'R Us 2021-02-12, 13:18
Replies: 906
Views: 94,282
Posted By gd_barnes
Big news from PrimeGrid: 9221*2^11392194-1...

Big news from PrimeGrid:

9221*2^11392194-1 is prime!!

See: https://primes.utm.edu/primes/page.php?id=131777

This was the 2nd smallest k remaining on the Riesel base 2 effort. Only k=2293...
Forum: Riesel Prime Search 2021-02-12, 10:16
Replies: 68
Views: 15,068
Posted By gd_barnes
Double checking for all k<300 to n=1M is...

Double checking for all k<300 to n=1M is complete.

No missing or incorrect primes found.

The links in post #57 are updated.

Nice work by RPS ! :-)
Forum: Riesel Prime Search 2021-02-11, 22:42
Replies: 1,021
Views: 123,839
Posted By gd_barnes
I did a due diligence on them: k=213...

I did a due diligence on them:

k=213 reserved by Chaos13; last status on this k 2014-02-28; last prime reported on this k 2017-07-18; last time posting at RPS 2014-04-28; last known activity on...
Forum: Riesel Prime Search 2021-02-11, 08:52
Replies: 1,021
Views: 123,839
Posted By gd_barnes
Reserving k=213, 221, 255, and 285 to n=2M. ...

Reserving k=213, 221, 255, and 285 to n=2M.

These k's are reserved but last had a status report over 6 years ago. The last prime reported on any of them was nearly 4 years ago. Apparently they...
Forum: Conjectures 'R Us 2021-02-06, 00:33
Replies: 1,081
Views: 89,193
Posted By gd_barnes
Oh OK. I'll note that.

Oh OK. I'll note that.
Forum: Conjectures 'R Us 2021-02-05, 22:00
Replies: 1,081
Views: 89,193
Posted By gd_barnes
Yes Are you reserving the next 1G range? Or...

Yes

Are you reserving the next 1G range? Or should I just wait until you reserve each range?
Forum: Aliquot Sequences 2021-02-01, 02:40
Replies: 3,401
Views: 302,419
Posted By gd_barnes
This did not release the sequences on the blue...

This did not release the sequences on the blue page. I think you will have to put the word "drop" on the same line as the sequences. I think having a line in between confuses the parser.
Forum: Conjectures 'R Us 2021-01-31, 22:48
Replies: 2,257
Views: 184,580
Posted By gd_barnes
:bow wave: Congrats on the proof! This...

:bow wave:

Congrats on the proof!

This completed our 2020 goal of proving 5 bases! :smile:
Forum: Conjectures 'R Us 2021-01-28, 10:08
Replies: 83
Views: 29,566
Posted By gd_barnes
Why? The current tests that we had in there...

Why?

The current tests that we had in there for base 2/4 were at n=6.65M or ~2M digits. It got little to no interest for the last several years.

3677878*3^n-1 is at n=5M, which is ~2.385M...
Showing results 1 to 25 of 1000

 
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