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Old 2022-02-25, 13:46   #67
MJansen
 
Jan 2018

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Hi ATH,
thanks for checking the endpoints!
And yes I have all candidates after sieving available. If you wish to check a few candidates, that would be great! Send me a PM, the files are way too large to add here.

Kind regards
Michiel
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Old 2022-02-25, 18:55   #68
MJansen
 
Jan 2018

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Default Candidate files - test

Hi ATM,

Here are the zipped text files with the candidates after sieving. The files are rather large because I set the interval till around merit 100. Always the optimist: I did not want to start up another sieve midway ;-)

There are two files (both plain text, without the txt extension), one for the plus side (TestP40000D30030M1p), and another for the minus side (TestP40000D30030M1m)

The first 3 lines are:
1 (= multiplier)
30030 (= divider)
479909 (=40.000th prime for the primorial)

After that are the candidates
-12
-14
-30
-42
-78
-108
etc. etc.

Choose some random candidates within the gap interval to test, If you would be so kind. Thanks in advance! Really appreciated!

Kind regards
Michiel Jansen
Attached Files
File Type: zip TestP40000D30030M1.zip (1.86 MB, 34 views)
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Old 2022-02-25, 18:57   #69
robert44444uk
 
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Jun 2003
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Quote:
Originally Posted by MJansen View Post
The plus side was found 25-2-2022 at 01.40 UTC/GMT+1 hour.

The search stopped at 479909#/30030 + 3.800.092. Which gives a gap of 6.966.714 at merit 14.540
What a shame - just shy of 7 million. You might want to update Wikipedia once it has been checked.
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Old 2022-02-25, 21:27   #70
mart_r
 
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you know...around...

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All good things come to an end... actually, I would never have expected my prime gap record to last for almost five years! Only H. Rosenthal's and J.K. Andersen's gap from 2004 stayed on the top for longer - about eight years - if my notes are correct.

Congrats Michiel!
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Old 2022-02-27, 12:39   #71
MJansen
 
Jan 2018

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Quote:
Originally Posted by mart_r View Post
All good things come to an end... actually, I would never have expected my prime gap record to last for almost five years! Only H. Rosenthal's and J.K. Andersen's gap from 2004 stayed on the top for longer - about eight years - if my notes are correct.

Congrats Michiel!
Hi Mart,

records are there to be broken ... thanks for the thumbs up!

Kind regards
Michiel
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Old 2022-02-27, 21:26   #72
robert44444uk
 
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Michiel - Are you happy to have your record credited to MJandJKA rather than yourself?
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Old 2022-02-28, 07:53   #73
MJansen
 
Jan 2018

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Quote:
Originally Posted by robert44444uk View Post
Michiel - Are you happy to have your record credited to MJandJKA rather than yourself?
Hi Robert,

very happy to share the credit since Jens developed the treesieve program that I used for presieving the candidates. We were in contact untill january 2021, after that he has not responded to my emails. I hope he is well.

Kind regards
Michiel
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Old 2022-02-28, 12:35   #74
ATH
Einyen
 
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Dec 2003
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It is called "APTreesieve" right? It does not seem to be available for download anywhere.

I made my own sieving with GMP and primesieve and sieved to 1e12, I missed some small interval near 1e12 because I split it on many computers, so I "only" found 3,447,400 factors: gap6966714factors.zip
leaving 35,956 candidates instead of your 35,943: gap6966714remaining.txt

I started doing PRP with pfgw64 from the lowest prime, but it will take a long time to double check everything for me.
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Old 2022-02-28, 17:32   #75
MJansen
 
Jan 2018

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Quote:
Originally Posted by ATH View Post
It is called "APTreesieve" right? It does not seem to be available for download anywhere.

I made my own sieving with GMP and primesieve and sieved to 1e12, I missed some small interval near 1e12 because I split it on many computers, so I "only" found 3,447,400 factors: gap6966714factors.zip
leaving 35,956 candidates instead of your 35,943: gap6966714remaining.txt

I started doing PRP with pfgw64 from the lowest prime, but it will take a long time to double check everything for me.
Hi ATH,

it is called APTreesieve. I have a windows version that I use. If you want it, PM me with a mail adress to forward it to, exe files cannot be send here if I remeber correctly.

Your sieving approach is close enough for me (<<1% deviaton).

Regarding the check of every candidate:
do you really want to check every candidate? This will take many days to finish. It would be great of you to do, but are you sure? I do appreciate it, but if I remember correctly Thomas Nicely did not check the gaps over 1 million, apart from the end points. Doing so would would give the gap extra credibility, so no complaints from me !

Kind regards
Michiel
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Old 2022-04-05, 06:59   #76
ATH
Einyen
 
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All the tests are finished the gap checks out:

35,956 composite PRP tests:
gap6966714prptests.zip

All 3,447,400 factors + 35,956 PRP tests in a sorted list:
gap6966714.zip

Last fiddled with by ATH on 2022-04-05 at 07:02
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Old 2022-04-05, 09:11   #77
MJansen
 
Jan 2018

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Quote:
Originally Posted by ATH View Post
All the tests are finished the gap checks out:

35,956 composite PRP tests:
gap6966714prptests.zip

All 3,447,400 factors + 35,956 PRP tests in a sorted list:
gap6966714.zip
Thank you sir!

Much appreciated checking the gap!

Ps I said I wanted to run 3 more mega gaps and two have finished already below the current record. The third one has just started.

Kinds regards
Michiel
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