mersenneforum.org  

Go Back   mersenneforum.org > Search Forums

Showing results 1 to 25 of 532
Search took 0.10 seconds.
Search: Posts Made By: mart_r
Forum: Prime Gap Searches 2020-05-24, 15:17
Replies: 201
Views: 14,750
Posted By mart_r
I'm currently in the 9.4e15 area, so that's ok...

I'm currently in the 9.4e15 area, so that's ok :tu:

I use Thomas's code from post # 145 here:
https://www.mersenneforum.org/showpost.php?p=534001&postcount=145
Forum: Prime Gap Searches 2020-05-23, 12:57
Replies: 16
Views: 2,606
Posted By mart_r
An update before a long weekend

Just letting you know, I'm still on it.:smile:

All q<=2690 have now also been searched to p<1012.
For q<=1000, only new results for 1012<p<3*1012 are shown in the table.
q: common difference in...
Forum: Prime Gap Searches 2020-05-14, 18:57
Replies: 201
Views: 14,750
Posted By mart_r
Do you want to join the search? If you say pretty...

Do you want to join the search? If you say pretty please with cherry icing on top, I may, well I might consider being so generous as to share a teeny weeny bit of the range.:wink:
(Also kinda...
Forum: Prime Gap Searches 2020-05-10, 14:05
Replies: 201
Views: 14,750
Posted By mart_r
Two 5000+ gaps already. Not bad. Reserving...

Two 5000+ gaps already. Not bad.

Reserving 9.3e15 to infinity.
Forum: Prime Gap Searches 2020-05-09, 12:56
Replies: 201
Views: 14,750
Posted By mart_r
Reserving 9.2e15 to 9.3e15.

Reserving 9.2e15 to 9.3e15.
Forum: Prime Gap Searches 2020-05-09, 12:46
Replies: 28
Views: 2,851
Posted By mart_r
The current first occurence list for twin prime...

The current first occurence list for twin prime gaps has 4757 entries (at 54.6*1015) and for quadruplet prime gaps 134776 entries (at 5.5*1015).
The number of entries would increase dramatically if...
Forum: Prime Gap Searches 2020-05-09, 11:46
Replies: 16
Views: 2,606
Posted By mart_r
Results p<10^12

Data as of 2020-05-04, all p<1012 for q<=1000 have been searched:
q: common difference in arithmetic progression p+k*q
CSG: Cramér-Shanks-Granville ratio via gap/phi(q)/log(p+gap)²
CSG_max:...
Forum: Lounge 2020-05-06, 20:27
Replies: 789
Views: 70,340
Posted By mart_r
An old one in terms of digital photography, but...

An old one in terms of digital photography, but still one of my favourites. Placed the camera on the floor for this.
Forum: Prime Gap Searches 2020-05-01, 08:51
Replies: 16
Views: 2,606
Posted By mart_r
Here's something that may or may not be...

Here's something that may or may not be interesting:
Analysis max. CSG values for each q<=1000,
after p is searched to a given point:

p <= minimum maximum average (Ø) ...
Forum: Prime Gap Searches 2020-04-30, 15:07
Replies: 16
Views: 2,606
Posted By mart_r
Talking Let's go Turbo!

(Are any fans of Beyblade around here?)

While moving in the 12-digit range, I noticed how inefficient my program is. I sieve the same numbers over and over again for every q. Quick-and-dirty...
Forum: Prime Gap Searches 2020-04-21, 20:35
Replies: 201
Views: 14,750
Posted By mart_r
I'd like to include the six new maximal gaps we...

I'd like to include the six new maximal gaps we have found in the OEIS, but I'm not quite sure how to go about the references, credits etc. For example, should I give a link to this thread, or...
Forum: Prime Gap Searches 2020-04-20, 08:48
Replies: 201
Views: 14,750
Posted By mart_r
Thanks! It's so nice to read an uplifting...

Thanks!
It's so nice to read an uplifting reply.:smile:
Forum: Prime Gap Searches 2020-04-19, 21:21
Replies: 201
Views: 14,750
Posted By mart_r
Results 9.1e15

Attached are the latest results.

The range 9.2e15 upward is unexplored territory. I don't know whether or not firejuggler completed the range reserved in post # 123.

Top 5 most wanted gaps:...
Forum: Prime Gap Searches 2020-04-12, 20:23
Replies: 16
Views: 2,606
Posted By mart_r
:smile: I notice that my code is well received,...

:smile:
I notice that my code is well received, so I had to rewrite it a little and remove a bug that could give incorrect results (if any) when the starting point ps was less than d&. Attached is...
Forum: Prime Gap Searches 2020-04-11, 18:53
Replies: 16
Views: 2,606
Posted By mart_r
Called out in the dark

(I always cringe a little when I see my hastily written post # 8 above with "q=2p", where I meant to say that q equals twice a prime number; might as well have written "q: prime"...)

Well, here's...
Forum: Prime Gap Searches 2020-04-03, 16:06
Replies: 201
Views: 14,750
Posted By mart_r
What a serendipity do dah! Who'da thunk it? (-Pete)

My strategy worked, for once :smile:
The day after my last post, this one showed up:
5782 8666757648460025
It has merit = 30.92, which is a new record.
Go me!:lavalamp:
Forum: Prime Gap Searches 2020-04-02, 19:36
Replies: 3
Views: 658
Posted By mart_r
The density of the numbers in the sequence as...

The density of the numbers in the sequence as given in my first post is increasing. There are roughly 0.5*x*log(x) numbers up to x, an estimate that's good to ± 5% for ~ 2^18 < x < 2^30. The 0.5 in...
Forum: Prime Gap Searches 2020-04-01, 19:10
Replies: 201
Views: 14,750
Posted By mart_r
Can anybody hear me? Come in, come in...

I get the feeling my range could need a bit of a double-check. Just a small sample to compare a couple of gaps.
It's kinda frustrating that above 7.2e15 - and I'm almost 70% through [8e15, 9e15] -,...
Forum: Prime Gap Searches 2020-03-29, 21:54
Replies: 16
Views: 2,606
Posted By mart_r
I've taken to do a systematic search for prime...

I've taken to do a systematic search for prime gaps in arithmetic progression.

(Perhaps this thread should be renamed "Prime gaps in arithmetic progression" as I'm not keeping the data for the...
Forum: Prime Gap Searches 2020-03-29, 20:48
Replies: 3
Views: 658
Posted By mart_r
Update: A gap greater than 2 is possible! gap ...

Update: A gap greater than 2 is possible!
gap after n/2^k=
0.5 1
0.75 1.5
0.875 2.5
1.3125 3.75
1.640625 9.75
1.880859375 36.5625
1.904296875...
Forum: Prime Gap Searches 2020-03-27, 19:05
Replies: 16
Views: 2,606
Posted By mart_r
Recap time. In all mathematical clarity, I...

Recap time. In all mathematical clarity, I think:smile::

For each positive integer k, there is a set of values {q,p} (q: positive integer, p: prime number) such that the value for CSG is a...
Forum: Lounge 2020-03-12, 22:44
Replies: 988
Views: 51,376
Posted By mart_r
I'd much rather had seen a reply to my lasts...

I'd much rather had seen a reply to my lasts posts in the prime gap search area:hankie::wink:
Forum: Lounge 2020-03-11, 19:21
Replies: 988
Views: 51,376
Posted By mart_r
I'd recommend visiting France. I mean, what have...

I'd recommend visiting France. I mean, what have you got Toulouse?


(Don't anyone dare to reply to that rubbish now...)
Forum: Prime Gap Searches 2020-03-10, 17:21
Replies: 91
Views: 7,716
Posted By mart_r
I kindly refer to this post: ...

I kindly refer to this post:
https://www.mersenneforum.org/showpost.php?p=539165&postcount=4

(And thereby admitting that I haven't looked at the latest results 5.1e15 - 5.5e15... :redface:)
Forum: Prime Gap Searches 2020-03-09, 21:51
Replies: 28
Views: 2,851
Posted By mart_r
Nice work! :thumbs-up: Though I'm not...

Nice work! :thumbs-up:

Though I'm not currently looking for the "simple" prime gaps, I'm looking forward to do so again in the near future.
Showing results 1 to 25 of 532

 
All times are UTC. The time now is 16:11.

Thu May 28 16:11:35 UTC 2020 up 64 days, 13:44, 1 user, load averages: 1.49, 1.71, 1.71

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2020, Jelsoft Enterprises Ltd.

This forum has received and complied with 0 (zero) government requests for information.

Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation.
A copy of the license is included in the FAQ.