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Forum: Prime Gap Searches 2021-01-13, 07:20
Replies: 214
Sticky: Prime Gap News
Views: 34,659
Posted By SethTro
New top 20 record

The top 20 overall merits (https://primegap-list-project.github.io/lists/top20-overall-merits/) list has this new addition "974879377*2221#/4626930 -49418 to +28932". It's a gap of 78350 with merit...
Forum: Prime Gap Searches 2021-01-08, 05:47
Replies: 124
Views: 17,242
Posted By SethTro
I've been pondering this for a while and you've...

I've been pondering this for a while and you've changed my mind I should be testing the least dense portion of the interval.

I plotted some examples and it appears that if d the divisor has few...
Forum: Prime Gap Searches 2021-01-07, 01:39
Replies: 124
Views: 17,242
Posted By SethTro
Not sure I quite understand the question. Is it ...

Not sure I quite understand the question. Is it
1) Why do I always search downwards before upwards?
2) Why do I give up after one search?

1) I don't think it matters which direction you search...
Forum: Prime Gap Searches 2021-01-04, 11:56
Replies: 40
Views: 1,384
Posted By SethTro
Medium improvement

I optimized handling of medium primes (https://github.com/sethtroisi/prime-gap/commit/1570d32e3a97c93fb5a96cea7128cf4edfaf0b2e) section of the code and got a 30-40% improvement! For long searches...
Forum: Prime Gap Searches 2021-01-03, 10:21
Replies: 40
Views: 1,384
Posted By SethTro
Took me a couple of days to understand this, you...

Took me a couple of days to understand this, you are running with --one-side-skip (or maybe more precisely you are running without --no-one-side-skip). This means that 99% of the time you skip...
Forum: Prime Gap Searches 2021-01-03, 06:16
Replies: 214
Sticky: Prime Gap News
Views: 34,659
Posted By SethTro
Thanks for the comment; I was focused on trying...

Thanks for the comment; I was focused on trying to understand what the list original had intended instead of asking "does this make sense?", So I changed it so there are four lists: top 20 with merit...
Forum: Prime Gap Searches 2021-01-02, 13:40
Replies: 214
Sticky: Prime Gap News
Views: 34,659
Posted By SethTro
For gaps with merit < 22, that are expected to...

For gaps with merit < 22, that are expected to take more than 3 minutes to verify (endpoints + internal) I (READ: the primegaps server) verify both endpoints but only a portion of the interval...
Forum: Prime Gap Searches 2021-01-02, 12:56
Replies: 214
Sticky: Prime Gap News
Views: 34,659
Posted By SethTro
Thanks D.Stevens for turned in a big batch...

Thanks D.Stevens for turned in a big batch (https://github.com/primegap-list-project/prime-gap-list/commit/d96ce54c81dbca32bce37e81f8af91d4d0eb7a83) of multiples of 6199# and 9973#

This moves...
Forum: Prime Gap Searches 2020-12-31, 11:54
Replies: 40
Views: 1,384
Posted By SethTro
I just checked in...

I just checked in https://github.com/sethtroisi/prime-gap/commit/793fc064a1abf9fcf868b487c5002bf3487d0ced which should fix the graphs in the future. It's technically possible to delete partial data...
Forum: Prime Gap Searches 2020-12-31, 02:51
Replies: 40
Views: 1,384
Posted By SethTro
"prob_minmerit" is controlled from two places;...

"prob_minmerit" is controlled from two places; `./gap_stats --min-merit X` and `gap_test.py --min-merit Y` you likely didn't set `--min-merit` when you ran gap_stats so it uses the default of merit >...
Forum: Prime Gap Searches 2020-12-29, 20:54
Replies: 214
Sticky: Prime Gap News
Views: 34,659
Posted By SethTro
I updated two tables on the lists site "Top...

I updated two tables on the lists site

"Top 20 gaps by merit" is now "Top 20 largest gaps ordered by merit"
https://primegap-list-project.github.io/lists/top20-gaps-by-merit/

"Top 20 overall...
Forum: Prime Gap Searches 2020-12-21, 11:06
Replies: 124
Views: 17,242
Posted By SethTro
I wanted to write down a little bit of analysis...

I wanted to write down a little bit of analysis I've been doing recently on the computation of Probability of Record, P(record) given a partial sieve.

This uses a number of conventions from the...
Forum: Prime Gap Searches 2020-12-16, 00:00
Replies: 40
Views: 1,384
Posted By SethTro
I'm happy to add this but it would be an easy...

I'm happy to add this but it would be an easy change if you wanted to write and contribute it. I believe you only need to change these two locations:
...
Forum: Prime Gap Searches 2020-12-15, 19:08
Replies: 40
Views: 1,384
Posted By SethTro
you lost gaps.db maybe from following my update...

you lost gaps.db maybe from following my update instruction maybe some other way.

sqlite3 gaps.db < prime-gap-list/allgaps.sql
Forum: Prime Gap Searches 2020-12-15, 01:01
Replies: 40
Views: 1,384
Posted By SethTro
This is fixed (you'll need to git pull). Plotting...

This is fixed (you'll need to git pull). Plotting works with zero, some, or all of the experimental data. If you want to not test any gaps you can pass --prp-top-percent=0
Forum: Prime Gap Searches 2020-12-14, 15:40
Replies: 40
Views: 1,384
Posted By SethTro
A couple of places in the plotting code assume...

A couple of places in the plotting code assume that all m have been tested (AKA --prp-test-percent=100 --no-one-side-skip), I've been working on fixing that but haven't finished. I'll change it so...
Forum: Prime Gap Searches 2020-12-13, 13:47
Replies: 214
Sticky: Prime Gap News
Views: 34,659
Posted By SethTro
Let's do some end of year celebration of...

Let's do some end of year celebration of progress. 🥳🎁📅🎉🎊

I'll update these in late December
* by year merit status (https://primegap-list-project.github.io/lists/merit-stats/)
* prime gap...
Forum: Prime Gap Searches 2020-12-13, 13:22
Replies: 40
Views: 1,384
Posted By SethTro
All results...

All results (m,p,d,previous_prime_offset,next_prime_offset) are stored in a sql database (prime-gap-search.db).
the script `./misc/record_check.py` will retrieve all the record gaps. If you want a...
Forum: Prime Gap Searches 2020-12-13, 12:25
Replies: 40
Views: 1,384
Posted By SethTro
Both are git repositories which can be updated...

Both are git repositories which can be updated with `git pull`.
If you want to update the newest prime gap records do something like this (it would be easy to add to update_gap_repo.sh, then set...
Forum: Prime Gap Searches 2020-12-13, 10:39
Replies: 40
Views: 1,384
Posted By SethTro
Looks like g++ is not installed, I'd be slightly...

Looks like g++ is not installed, I'd be slightly surprised if gmp installed (the first code block) you might need to redo that block if you get an error like "mpz_prevprime not found"

sudo apt...
Forum: Prime Gap Searches 2020-12-12, 12:58
Replies: 40
Views: 1,384
Posted By SethTro
I was misread your message and misunderstood. I...

I was misread your message and misunderstood. I thought you were saying it didn't work with 3.7 but it doesn't work before 3.7.

I've updated the README and I'm wrote a fix for `gap_test.py...
Forum: Prime Gap Searches 2020-12-12, 00:59
Replies: 40
Views: 1,384
Posted By SethTro
Awesome that you got this working! Is this under...

Awesome that you got this working! Is this under WDL? you mentioned it before and it would be nice to confirm it can work there.

Hum, I'm running this on a Ubuntu 18.10 instance (with sqlite...
Forum: Prime Gap Searches 2020-12-11, 23:47
Replies: 40
Views: 1,384
Posted By SethTro
Looks like I can do this ABC...

Looks like I can do this

ABC $a*1009#/3018+$b // {number_primes,$a,1}
1 192
1 324
1 512
1 648
1 768
1 1296
1 2066
Forum: Prime Gap Searches 2020-12-11, 23:23
Replies: 40
Views: 1,384
Posted By SethTro
Please do comment on issues, I'll write this...

Please do comment on issues, I'll write this (sqlite3 > 3.18 + suggestion of Ubuntu 20.04) up in README.md#setup (https://github.com/sethtroisi/prime-gap/blob/main/README.md#setup) later today. Does...
Forum: Prime Gap Searches 2020-12-10, 10:22
Replies: 40
Views: 1,384
Posted By SethTro
This is all c++ / python code, so technically it...

This is all c++ / python code, so technically it could work. It uses gmpy2 which is going to be ugly to install in windows. I'll see if I can cross compile with mingw but I'm not hopeful.
Showing results 1 to 25 of 235

 
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