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Forum: Prime Gap Searches 2021-07-29, 08:16
Replies: 5
Views: 458
Posted By robert44444uk
I'm up to 1.284e14 and I have found the following...

I'm up to 1.284e14 and I have found the following first instance double gaps

79280544407833 79280544408151 79280544408469 318
65110291176851 65110291177181 65110291177511 330...
Forum: Prime Gap Searches 2021-07-28, 15:19
Replies: 258
Sticky: Prime Gap News
Views: 60,487
Posted By robert44444uk
This was the "most wanted" gap with no known pair...

This was the "most wanted" gap with no known pair of primes!

113326 11.5806 62857*9859#/46410-57330

119222 will now be the smallest missing gap in the table.
Forum: Prime Gap Searches 2021-07-27, 14:23
Replies: 5
Views: 458
Posted By robert44444uk
I've completed 5e13 to 6e13, with no double gap...

I've completed 5e13 to 6e13, with no double gap >312.

I'm now taking 6e13 to 3e14.
Forum: Prime Gap Searches 2021-07-26, 09:37
Replies: 5
Views: 458
Posted By robert44444uk
Ah!! Of course! I forgot the law of small...

Ah!! Of course! I forgot the law of small integers.

It is also a CPAP-3.
Forum: Prime Gap Searches 2021-07-20, 10:40
Replies: 5
Views: 458
Posted By robert44444uk
Repeating gaps

With the group's current computing resources it should be possible to take the following sequence and extend it

https://oeis.org/A052187

So 47,53,59 is the first sequence of primes with a...
Forum: Prime Gap Searches 2021-07-19, 11:52
Replies: 43
Views: 12,655
Posted By robert44444uk
I'm not sure anyone actually stores this list of...

I'm not sure anyone actually stores this list of gaps.

A very small program in C or Perl can generate this list faster than you can call it up from a hard drive.

Someone will tell me you can...
Forum: Prime Gap Searches 2021-07-19, 11:24
Replies: 33
Views: 2,294
Posted By robert44444uk
Astonishing!

Astonishing!
Forum: Prime Gap Searches 2021-07-07, 06:41
Replies: 33
Views: 2,294
Posted By robert44444uk
The input page is now working...

The input page is now working https://primegaps.cloudygo.com/
Forum: Prime Gap Searches 2021-06-29, 08:06
Replies: 33
Views: 2,294
Posted By robert44444uk
Hi - does anyone know when the entry page is...

Hi - does anyone know when the entry page is coming back online?
Forum: Prime Gap Searches 2021-06-20, 07:03
Replies: 33
Views: 2,294
Posted By robert44444uk
Astounding, many congrats. Lets hope it is...

Astounding, many congrats.

Lets hope it is a new maximal!
Forum: Prime Gap Searches 2021-06-19, 09:14
Replies: 258
Sticky: Prime Gap News
Views: 60,487
Posted By robert44444uk
It will be interesting to see how these facts on...

It will be interesting to see how these facts on prime gaps change over the next year:


As of the most recent list, the lowest gap size with no known prime pair is 113326.

The 10th smallest...
Forum: Prime Gap Searches 2021-06-05, 06:54
Replies: 18
Views: 1,875
Posted By robert44444uk
I feel confident that there are people who do the...

I feel confident that there are people who do the distance in a lifetime. But probably not most specimens of homo sapiens species.

People are encouraged to do 10,000 steps a day in the UK, and an...
Forum: Prime Gap Searches 2021-06-02, 21:38
Replies: 258
Sticky: Prime Gap News
Views: 60,487
Posted By robert44444uk
I've come back after a little time away to look...

I've come back after a little time away to look at something else, but found this on day 1 of searching

542206 27.573 x*19867#/46410-y

Rather tasty, I would say.
Forum: Prime Gap Searches 2021-05-04, 06:32
Replies: 258
Sticky: Prime Gap News
Views: 60,487
Posted By robert44444uk
Cool!

Cool!
Forum: Prime Gap Searches 2021-03-19, 08:47
Replies: 46
Views: 20,222
Posted By robert44444uk
Nice gap! It is really tough to find records...

Nice gap! It is really tough to find records <3000
Forum: Software 2021-03-15, 18:13
Replies: 13
Views: 1,429
Posted By robert44444uk
No one k was taken up as far as n=1e6, about 850k...

No one k was taken up as far as n=1e6, about 850k from memory was the highest. That k has more than 200 primes, and is the only known k with >200 primes.

Checking is quite slow for these k,...
Forum: Software 2021-03-13, 08:30
Replies: 13
Views: 1,429
Posted By robert44444uk
The search was discontinued because many of the...

The search was discontinued because many of the goals it set out to achieve were reached.

Yes it will rediscover K that provide very prime series. To get new results you need to scan a different...
Forum: Prime Gap Searches 2021-03-10, 11:58
Replies: 11
Views: 1,102
Posted By robert44444uk
You might want to work out what your speed of...

You might want to work out what your speed of checking is. How many billions of prime gaps per second is a reasonable measure.

At 1e9 prime gaps per second, you would move from 2^64 (=1.84467e19)...
Forum: Software 2021-03-04, 14:32
Replies: 13
Views: 1,429
Posted By robert44444uk
Nostalgia indeed! Here is (I think) a table...

Nostalgia indeed!

Here is (I think) a table of the most recent Riesel records at each level. First column is the cumulative number of primes, and the other columns represent the smallest n value...
Forum: Software 2021-03-04, 10:37
Replies: 13
Views: 1,429
Posted By robert44444uk
Hi masser, the software finds k that provide very...

Hi masser, the software finds k that provide very prime density. It does more than calculate Nash. It incorporates pfgw and produces output that looks like:


R 267710937687553 52 100/8531...
Forum: Software 2021-03-03, 18:28
Replies: 13
Views: 1,429
Posted By robert44444uk
Thank you for clarifying Dr S. Very prime...

Thank you for clarifying Dr S.

Very prime sequences arise from "very prime numbers" also been referred to on this site as a VPN. All VPNs are a multiple of k (an integer) and M(p) where M(p) is...
Forum: Software 2021-03-03, 13:59
Replies: 13
Views: 1,429
Posted By robert44444uk
Multithreading existing code

I am wondering if there are c programmers out there who could take a great piece of prime finding software and make it multi thread.

The software helps to find constant k such that the power...
Forum: Prime Gap Searches 2021-02-20, 14:21
Replies: 258
Sticky: Prime Gap News
Views: 60,487
Posted By robert44444uk
No more 115694! (115694, '16313 *...

No more 115694!

(115694, '16313 * 7547#/46410 -104270', 'Verified! (61.3s)')
Forum: Prime Gap Searches 2021-02-09, 14:38
Replies: 258
Sticky: Prime Gap News
Views: 60,487
Posted By robert44444uk
Cool, that is a beaut!

Cool, that is a beaut!
Forum: Prime Gap Searches 2021-02-07, 06:38
Replies: 258
Sticky: Prime Gap News
Views: 60,487
Posted By robert44444uk
"No known gap larger with smaller start" ...

"No known gap larger with smaller start"

https://primegap-list-project.github.io/lists/prime-gaps-high-watermarks/

I'm not sure this list is correct - how can we have the middle of these -...
Showing results 1 to 25 of 1000

 
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