Quote from: gjhiggins on Today at 03:07:49 PM

Quote from: wizz13150 on Today at 05:39:23 AM

Boom !

My biggest, and the biggest Gapcoin's Gap. Grin

(length, not merit)

28168,C??,31.767181,Gapcoin,04-05-2021,386,1228769885602...

The previous one was a gap of 27666 @shift 896.

Agreed, well done Wizz.

That Craig Loizides is making things more difficult - https://www.mersenneforum.org/showpost.php?p=576044&postcount=239

Quote

Craig also improved the record for 15122, so there are now only two gaps under 25,000 with merit < 25.

For those that aren't neck-deep in it, a 386-digit prime means Wizz used a shift of 1024 to get that seriously-improved merit.

The existing-soon-to-be-previous holder of that record was Dana Jacobsen and the gap was between primes of 502 digits in length - which is why Wizz' merit is higher, it's the same gap size but it's larger in relation to the digit length of the surrounding primes.

INSERT INTO gaps VALUES(28168,0,'C','?','C','Jacobsen',2014,24.3700,502,'637*1201#/18390 - 23308');

One slight thing that nags at me is that we're always submitting 'P' (probable primes) and it would be nice to upgrade them to 'C' (confirmed primes). I have asked about this and I'll probably get a response in due course. I used Dana Jacobsen's eccp-dj to do the checking, as well as PRIMO (just to find out what prime certificates look like).

As for the Mersenne Forum's Prime Gap Search group, they seem to be heading into a different space entirely: “I've got two 3M+ gaps in the offing.” - those have to be some seriously large surrounding primes.

Cheers

Graham

Proving numbers are primes are not hard in this limited range. Proving that there is no primes in that gap is more work.

It would be good to have confirmed prime gaps.

Gapcoin has a very limited range to work with and other groups have improved their algos. The pow is limiting what range and how it's done., Frey did a good work to create this coin but it needs some improvements.

Mersenne group finds new nice gaps in a day and we do the same in a month. I changed to search in p88 for a record and so far I just have found one 25+ merit gap. To find a 30+ gap is hard.