mersenneforum.org  

Go Back   mersenneforum.org > Search Forums

Showing results 1 to 25 of 1000
Search took 0.23 seconds.
Search: Posts Made By: robert44444uk
Forum: Prime Gap Searches 2021-02-20, 14:21
Replies: 232
Sticky: Prime Gap News
Views: 40,888
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: 232
Sticky: Prime Gap News
Views: 40,888
Posted By robert44444uk
Cool, that is a beaut!

Cool, that is a beaut!
Forum: Prime Gap Searches 2021-02-07, 06:38
Replies: 232
Sticky: Prime Gap News
Views: 40,888
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 -...
Forum: Prime Gap Searches 2021-02-07, 06:30
Replies: 232
Sticky: Prime Gap News
Views: 40,888
Posted By robert44444uk
Nice!

Nice!
Forum: Prime Gap Searches 2021-02-04, 12:17
Replies: 45
Views: 2,909
Posted By robert44444uk
Hi Seth, a couple of questions Do the...

Hi Seth, a couple of questions


Do the --prp-top-percent and --min-merit handles still work?
Will the program pick up automatically after either ctrl c is pressed, or the power outage, or...
Forum: Prime Gap Searches 2021-02-03, 16:59
Replies: 31
Views: 11,606
Posted By robert44444uk
Here is a useful gap! 213240, C?P, 32.2418,...

Here is a useful gap!

213240, C?P, 32.2418, RobSmith, 2021-02-03, 2873, 586399*6703#/46410-131770
Forum: Prime Gap Searches 2020-12-15, 17:19
Replies: 45
Views: 2,909
Posted By robert44444uk
Hi Seth Hmm, something went wrong today - I...

Hi Seth

Hmm, something went wrong today - I seem to have lost a key file. Can you tell me what I must do to repair or start afresh?

gap stats went well, as did the combined sieve

...
Forum: Prime Gap Searches 2020-12-13, 23:06
Replies: 45
Views: 2,909
Posted By robert44444uk
OpenPFGW has a stop on success capability, I seem...

OpenPFGW has a stop on success capability, I seem to remember

https://sourceforge.net/projects/openpfgw/

What command do I do to get openPFGW for Linux into my Ubuntu library?
Forum: Prime Gap Searches 2020-12-13, 12:34
Replies: 45
Views: 2,909
Posted By robert44444uk
Thanks Seth Installed on my big machine -...

Thanks Seth

Installed on my big machine - effortless this time.
The last few questions for today question:



$ ./gap_test.py --unknown-filename 907_53970_1_10000_s15000_l1000M.txt...
Forum: Prime Gap Searches 2020-12-13, 11:38
Replies: 45
Views: 2,909
Posted By robert44444uk
Trying to understand the input variables. In post...

Trying to understand the input variables. In post #1 you write



sieve to sieve m * P#/d for m from a to a+b up to limit

./combined_sieve --save-unknowns -p <P> -d <d> --mstart <a> --minc <b>...
Forum: Prime Gap Searches 2020-12-13, 10:57
Replies: 45
Views: 2,909
Posted By robert44444uk
Thanks Seth - I had actually figured that out in...

Thanks Seth - I had actually figured that out in the end. There were several more issues on the way after that but it was a question that I was running everything from scratch and I needed to run...
Forum: Prime Gap Searches 2020-12-11, 08:57
Replies: 45
Views: 2,909
Posted By robert44444uk
Well, that looks promising. So I can think if...

Well, that looks promising. So I can think if there is a Linux methodology to use Seth's program, then it should be possible to me to join in the fun.
Forum: Prime Gap Searches 2020-12-10, 18:06
Replies: 45
Views: 2,909
Posted By robert44444uk
Great f you can, Seth!

Great f you can, Seth!
Forum: Prime Gap Searches 2020-12-10, 11:59
Replies: 127
Views: 20,718
Posted By robert44444uk
Hi henryzz I think you are right, over the...

Hi henryzz

I think you are right, over the long run, deficient primorial offsets are not as efficient as defiicent primorials around the centre point, but they still provide a pretty sparse set of...
Forum: Prime Gap Searches 2020-12-10, 09:47
Replies: 45
Views: 2,909
Posted By robert44444uk
Hi Seth I don't know what software one needs...

Hi Seth

I don't know what software one needs to have, but searchers like me work in a Windows environment, or have the ability to emulate some other environments through a Windows shell.

Any...
Forum: Prime Gap Searches 2020-12-05, 10:24
Replies: 232
Sticky: Prime Gap News
Views: 40,888
Posted By robert44444uk
Love it :cool:

Love it :cool:
Forum: Prime Gap Searches 2020-12-02, 08:00
Replies: 232
Sticky: Prime Gap News
Views: 40,888
Posted By robert44444uk
I ran the program - it took about 2 seconds to...

I ran the program - it took about 2 seconds to produce the results below. It needs code in there to sort the file by absolute value of remaining candidates.

My strategy looked at a range of 1...
Forum: Prime Gap Searches 2020-11-28, 13:48
Replies: 232
Sticky: Prime Gap News
Views: 40,888
Posted By robert44444uk
For very large gaps I used the sieve_primes...

For very large gaps I used the sieve_primes routine and then pfgw. Here is a ready to use perl program - clearly change your variables. It produces a pfgw-ready file.


#!/usr/bin/env perl

#...
Forum: Puzzles 2020-11-28, 11:23
Replies: 34
Views: 2,155
Posted By robert44444uk
Got to love it. The newspapers need to be...

Got to love it.

The newspapers need to be told - the World needs to know :alien:

I suggest the Daily Mail or the Sun in the UK, and Fox News for the telly. And the boys and girls in QAnon, and...
Forum: Puzzles 2020-11-26, 11:01
Replies: 34
Views: 2,155
Posted By robert44444uk
Certainly not the smallest, but has some symmetry...

Certainly not the smallest, but has some symmetry and uses 5 operators, +,-,^,/,()
...
Forum: Prime Gap Searches 2020-11-14, 09:05
Replies: 232
Sticky: Prime Gap News
Views: 40,888
Posted By robert44444uk
Cool! The megagaps I found were based on a...

Cool!

The megagaps I found were based on a deep sieve of promising candidates (perl program) and pfgw for the intermediate composite checking. My largest gap (5m+) took three months to find.
Forum: Prime Gap Searches 2020-11-03, 15:46
Replies: 127
Views: 20,718
Posted By robert44444uk
Hi henryzz - generally speaking we do sieve over...

Hi henryzz - generally speaking we do sieve over A in our deficient primorial searches - A is favoured when 5mod30 or 25mod30, but others also get a look in - so I tend to look at...
Forum: Prime Gap Searches 2020-10-30, 15:39
Replies: 127
Views: 20,718
Posted By robert44444uk
There are two major approaches at the moment. ...

There are two major approaches at the moment.

Deficient primorials of the form A*p#/d form the majority of gap records, given that it is at a midpoint of a relatively smooth range 4 merits wide,...
Forum: Prime Gap Searches 2020-10-29, 09:54
Replies: 232
Sticky: Prime Gap News
Views: 40,888
Posted By robert44444uk
We can now add 117242 to that list

We can now add 117242 to that list
Forum: Prime Gap Searches 2020-10-29, 08:05
Replies: 127
Views: 20,718
Posted By robert44444uk
Hi Seth It would be useful, in this and your...

Hi Seth

It would be useful, in this and your other post, #98 if you could explain your variables - so what is "m", "d", "p" "X" - generally, for deficient primorial multiples we have tended to use...
Showing results 1 to 25 of 1000

 
All times are UTC. The time now is 01:44.

Sat Feb 27 01:44:57 UTC 2021 up 85 days, 21:56, 1 user, load averages: 1.88, 1.83, 2.01

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2021, 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.