Prime Gap News

[SethTro]

Originally Posted by robert44444uk

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

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
...

Congrats on the large high merit gap!

I pushed new data to https://primegap-list-project.github.io/lists/ But we only have top20-gaps-with-merit-over-20

You can find your record on the high water marks list (No larger gap with smaller start)
https://primegap-list-project.github...gh-watermarks/

[SethTro]

Originally Posted by robert44444uk

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

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

I added a new list on the site for this: https://primegap-list-project.github...merit-over-30/

[robert44444uk]

Originally Posted by robert44444uk

Most wanted: No gap known: Now found

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

We can now add 117242 to that list

[SethTro]

Yesterday I bogged the server down turning in a combined 1000 records on 2221#, 4443#, 5557#, and 6661# which adds to their line-y-ness on https://primegaps.cloudygo.com/graphs.html?max=120000

I also verified the endpoints for my largest gap, 241756 starting at 82183*8887#/371697690-91414, http://factordb.com/index.php?id=1100000001589837603

Found one small missing gap (125974) and 4 others under 150,000.

I think I'm going to spend my compute this week testing the feasibility of finding a gap > 1M.

[henryzz]

Just submitted a new record 133364, C??, 21.8868, D.Stevens, 2020-11-02, 2647, 1559*6199#/11#-67062

Does it change from C?? to C?P on its own?

[SethTro]

Originally Posted by henryzz

Just submitted a new record 133364, C??, 21.8868, D.Stevens, 2020-11-02, 2647, 1559*6199#/11#-67062

Does it change from C?? to C?P on its own?

Thanks For submitting the new record!

The server decided it would take too long (> 5 minutes) to verify the record so it accepted it on your word. Occasionally I go through and bulk verify the lowest C?? records.

There's nothing wrong with it being a C?? record, just an acknowledgement that the server has finite resources.

[henryzz]

How often are tables such as https://primegap-list-project.github...p-discoverers/ updated? I don't seem to have made it onto the list

[SethTro]

Originally Posted by henryzz

How often are tables such as https://primegap-list-project.github...p-discoverers/ updated? I don't seem to have made it onto the list

The current process is I manually run update.sh and push to GitHub every other week. I also do manually updates anytime anything "interesting" happens. I just updated them so you should appear in the next 2-10 minutes depending on github/browser caching.

[SethTro]

Originally Posted by SethTro

I think I'm going to spend my compute this week testing the feasibility of finding a gap > 1M.

Took a little longer than a week but I found my first merit 20+ MEGAGAP

1141184, C?P, 20.6845, S.Troisi, 2020-11-11, 23961, 2851 * 55511#/9699690 -598118

[robert44444uk]

Originally Posted by SethTro

Took a little longer than a week but I found my first merit 20+ MEGAGAP

1141184, C?P, 20.6845, S.Troisi, 2020-11-11, 23961, 2851 * 55511#/9699690 -598118

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.

[SethTro]

I had a two more successes today

1001952  25.1848  1204909 * 40009#/30030 -481326 to +520626    RECORD!
1074410  19.474  20803 * 55511#/9699690 -554276 to +520134

The first is the smallest start (17,278 digits) to a megagap and the 4th highest merit megagap.
MJPC&JKA had previously found a prime gap of 1113106 with 25.9 merit following 587*43103#/2310-455704 which leads in both metrics.