Prime Gap News - Page 17

mart_r · 2020-10-15, 20:56

Quote:

Originally Posted by SethTro

Can someone validate I understand the discoverer line?
"PDG (- 8 maa 2016) | ET (+ 10/2012 vb PDG 6 nov 2012)"

I take this to mean that PDG (Patrick De Geest) found the lower prime on 8th march(?) (may?) 2016 and ET (Edward Trice) found the next prime 10/2012 and it was verified by PDG 6th nov 2012.

if next and previous discoverer are the same person it's obvious what to do (use their name at the later date). Any suggestions for how to credit it when the record was found by two people?

Like in the example in your last post, they should both be credited. So, looks good to me (that's what the acronym stands for, right?)
Also, "maa" = maart = March, "mei" = May.

MJansen · 2020-10-17, 08:12

Goedemorgen Mart, good to see I am not the only one that knows their Dutch ;-)

Mvgr
michiel

SethTro · 2020-10-17, 08:19

Quote:

Originally Posted by mart_r

Like in the example in your last post, they should both be credited. So, looks good to me (that's what the acronym stands for, right?)
Also, "maa" = maart = March, "mei" = May.

How should I mark credit for the pair in allgaps.sql?
We currently have a 8 letter discoverer for each row. And I think it would be silly to create a new 'discoverer' for each pair (as some pairs have only a single discoverer together)

Imagining that RobSmith and I worked together on some MEGAGAPS would these be
1 'RobSmith -, SethTroisi +'
2. 'RobSmith&S.Troisi'
3. 'RobSmith,S.Troisi'
4. 'RobSmith S.Troisi'
5. 'RobSmith and S.Troisi'
6. 'RobSmith working together productively with S.Troisi for the finding of megagaps'

mart_r · 2020-10-17, 13:26

Quote:

Originally Posted by SethTro

How should I mark credit for the pair in allgaps.sql?
We currently have a 8 letter discoverer for each row. And I think it would be silly to create a new 'discoverer' for each pair (as some pairs have only a single discoverer together)

Imagining that RobSmith and I worked together on some MEGAGAPS would these be
1 'RobSmith -, SethTroisi +'
2. 'RobSmith&S.Troisi'
3. 'RobSmith,S.Troisi'
4. 'RobSmith S.Troisi'
5. 'RobSmith and S.Troisi'
6. 'RobSmith working together productively with S.Troisi for the finding of megagaps'

If my quick-and-dirty analysis was somewhere near correct, there wasn't a single case for a gap not yet in the list where two different discoverers other than Patrick were listed. So for example MLB-/MLB+ and PDG-/MLB+ could both be listed as MLBrown as discoverer in short and with mention of Patrick De Geest/BorderPRP in long text. Or, maybe "PDG__MLB" for the second example and "RS____ST" in your example above. But I'm running out of ideas...

Quote:

Originally Posted by MJansen

Goedemorgen Mart, good to see I am not the only one that knows their Dutch ;-)

Mvgr
michiel

I have it from some of the calendar notebooks I used to scribble into when I was a kid.

I'm not fluent in Dutch, but, Germany being a bordering country to Belgium and The Netherlands, I do recognize a good deal of words (like "met vriendelijke groeten" and such:).

Bobby Jacobs · 2020-10-17, 22:47

Quote:

Originally Posted by robert44444uk

Code:

49896	Jacobsen
12243	RobSmith
10341	Rosnthal
8970	Toni_Key
5477	M.Jansen
2385	MJPC&JKA
1114	Gapcoin
898	MJansen
851	Spielaur
752	PierCami
509	S.Troisi
136	TorAlmJA
120	RP.Brent
116	Be.Nyman
113	MrtnRaab
94	M
80	TRNicely
72	LndrPrkn
71	Yng&Ptlr
70	TOeSilva
52	HrzogTOS
43	Glaisher
42	Andersen
38	DHLehmer
13	Ritschel
12	GABandAR
9	PardiTOS
8	LLnhardy
8	RosntlJA
6	DonKnuth
5	ColeStev
3	AEWestrn
3	JLGPardo
3	PDeGeest
2	CKernTOS
2	JamesFry
2	JRdrgTOS
2	MJandJKA
2	ML.Brown
2	Pinho_MF
2	RosntlJF
2	Weslwski
1	ANair_MF
1	APinhTOS
1	ATeixTOS
1	CBastTOS
1	Euclid
1	H.Dubner
1	JFNSTOeS
1	LMorelli
1	RFischer
1	TAlmFMJA
1	YPPauloR

It is funny that Euclid is in this table. I am pretty sure that he discovered more than 1 prime gap. lol

robert44444uk · 2020-10-18, 07:28

This graph just goes to show how puny our efforts are, and how many really big (40+ merit) gaps there are out there!

SethTro · 2020-10-19, 07:45

Quote:

Originally Posted by robert44444uk

This graph just goes to show how puny our efforts are, and how many really big (40+ merit) gaps there are out there!

I coded up a dynamic version of this with credit

https://primegaps.cloudygo.com/graphs.html

robert44444uk · 2020-10-19, 08:29

Quote:

Originally Posted by SethTro

I coded up a dynamic version of this with credit

https://primegaps.cloudygo.com/graphs.html

Very pretty - I would take the top of the CFC line and code as "Mersenne Prime Gap Search" (PGS) given the efforts of this group to get the search to 2^64 a couple of years back.

On a selfish note, I think any colour similar to Dana's (i.e. mine) need to be changed to accentuate. Maybe swap out some red yellows and green to allow current searchers to see their results more clearly.

Another selfish note - on another list - https://primegap-list-project.github...merit-over-10/ where I am noted as cooperating with Dana for the large gaps - in fact for all gaps over 650k I did this work with my own software and approach. The problem can be traced back to the simplicity of the Nicely site that largely listed the submitter, and not the approach.

My records come in four flavours - those less than 1500 were my finds under the PGS collaboration, those over 650k, which were mine alone, and those in between which were largely my running Dana's perl program but also contain quite a lot of records in the 1500 to 5000 range relating to CRT offsets, which was a novel approach I worked on.

SethTro · 2020-10-19, 08:52

Quote:

Originally Posted by robert44444uk

Very pretty - I would take the top of the CFC line and code as "Mersenne Prime Gap Search" (PGS) given the efforts of this group to get the search to 2^64 a couple of years back.

On a selfish note, I think any colour similar to Dana's (i.e. mine) need to be changed to accentuate. Maybe swap out some red yellows and green to allow current searchers to see their results more clearly.

Another selfish note - on another list - https://primegap-list-project.github...merit-over-10/ where I am noted as cooperating with Dana for the large gaps - in fact for all gaps over 650k I did this work with my own software and approach. The problem can be traced back to the simplicity of the Nicely site that largely listed the submitter, and not the approach.

My records come in four flavours - those less than 1500 were my finds under the PGS collaboration, those over 650k, which were mine alone, and those in between which were largely my running Dana's perl program but also contain quite a lot of records in the 1500 to 5000 range relating to CRT offsets, which was a novel approach I worked on.

These are all reasonable suggestions.

1. It's moderately hard to do this. Maybe a good balance would be to add a line with text "Mersenne Prime Gap Search Group" under that area.

2. You can toggle Dana's (or anyone's) records off by clicking on their label. I certainly agree that you don't want to be near Dana's color, but it's hard to select many different colors. You can also toggle the range with ?max=20,000 and hope the order rejiggers so that you get a different color.

3. This can be tracked to the credit line, the site uses the text from the final "display" column verbatum

Quote:

INSERT INTO credits VALUES('RobSmith','Robert W. Smith','Coordinator, PGS. Some results contributed after 2014 employ Perl code written by Dana Jacobsen.','Robert W. Smith [Dana Jacobsen]');

4. One solution would be to split your contributions to multiple names and credit Dana for only the 1500- 5000 range records?

Sidenote: The code that runs this site is at https://github.com/sethtroisi/prime-gap-record-server, It's fairly easy to run locally and I'd happily accept pull requests.

Code:

$ git clone https://github.com/sethtroisi/prime-gap-record-server
$ cd prime-gap-record-server
$ git clone https://github.com/primegap-list-project/prime-gap-list.git
$ sqlite3 prime-gap-list/gaps.db < prime-gap-list/allgaps.sql
$ python flask_serve.py

robert44444uk · 2020-10-24, 06:56

Quote:

Originally Posted by robert44444uk

Most wanted:

No gap known:

Code:

...
121366
....
127346
....
127544
...

Now found

robert44444uk · 2020-10-24, 14:41

I just found the second largest merit 30 gap ever:

The list will look like this when I post it - top 20 30-merit gaps

Code:

309030	31.7822	Rosnthal
214090	30.5885	RobSmith
203890	35.6402	RobSmith
189078	35.5311	M.Jansen
183860	32.0045	M.Jansen
157194	30.3829	RobSmith
157178	31.8285	Jacobsen
129326	30.2817	RobSmith
128826	31.1432	RobSmith
125078	30.4885	Jacobsen
120664	32.3245	MJPC&JKA
116676	30.3614	Toni_Key
109776	32.2502	Jacobsen
101616	30.8124	Jacobsen
99160	30.5264	Jacobsen
89028	30.7589	RobSmith
86676	31.2247	RobSmith
85686	30.093	MJPC&JKA
84766	30.711	Jacobsen
82404	31.0414	M.Jansen
78260	30.0127	RobSmith

2020-10-18, 07:28	#182
robert44444uk Jun 2003 Oxford, UK 11110000100₂ Posts	This graph just goes to show how puny our efforts are, and how many really big (40+ merit) gaps there are out there! Attached Thumbnails

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2020-10-17, 08:12	#178
MJansen Jan 2018 101001₂ Posts	Goedemorgen Mart, good to see I am not the only one that knows their Dutch ;-) Mvgr michiel