Reserving S26 for sieving only P=21T-30T.

I am combining additional sieving for R26 and S26 and have determined that the optimum depth for n=250K-500K to be P=30T. ETA on one core is about 10 days. I will then release S26, post the updated sieve file to the pages, and begin the search for my reservation on R26.

For those who are interested, the 3 k's on S26 are also recommended in this thread to push a little higher from n=250K to 300K.

Doing the optimum depth calculation was an interesting excercise in the efficiency of combining both sides of a base for sieving. I did the calculation on only the 1 k remaining for R26. The optimum was only P=20T so taken alone, R26 at P=21T was already sieved far enough. But combining them gives the extra efficiency of sieving 4 total k's at once.


Gary

[quote=Batalov;213683]R30 just passed n=200K for my three remaining square [I]k[/I]'s...[/quote]
Done with 4[I]k[/I]'s for R30 to n=210K. One prime. Base released.

Reserving

S30 both k's to n=300K

Update
 

s17 is at n=780k, without primes.
it's getting boring.. :smile:

I think i will pause (not unreserve) this, and continue s19 for some weeks.

[quote=Xentar;215158]s17 is at n=780k, without primes.
it's getting boring.. :smile:

I think i will pause (not unreserve) this, and continue s19 for some weeks.[/quote]

I don't blame you. Wow. That's a lot of work. I remember Sierp base 9 was taking >4 hours per test shortly after it jumped up an fftlen and as it neared n=800K. How long was your test time on S17 as it neared n=780K? With the size ~29% larger at the same n-depth, I'm thinking > 4*~1.29^2 or > ~6.65 hours per test!

As an incentive to go higher, you'll be hitting 1 million digit tests at n=~813K. :-)

Can you post a results file for n=500K-780K? I have results for everything n<=500K.

Thanks.

I have completed fully sieving R26 & S26 for n=250K-500K to P=30T. No more sieving should be needed for the entire range. Updated sieve files are now posted on the pages. I will be testing R26 to at least n=400K.

Now reserving R22 & S22 for n=300K-1M for sieving only. At a current depth of only P=7T, much sieving is needed. R22 has already been searched to n=400K but I'll include n=300K-400K for a possible future doublecheck. The additional sieving time needed will be minimal since it is only 1 k out of 5 that are being sieved together and is only 1/7th of the entire n-range.


Gary

Riesel Base 27 tested to n=600K (1 k remaining) continuing

R26 is at n=300K; nothing to report; continuing to n=400K.

Status report
 

Base=10 (Sierpinski + Riesel) tested till n=470000.

It was time to get S15 off of the untested list so I have done a small effort:

S15 is complete for k<=1M to n=10K. 14 k's are remaining. Info. shown on the web pages.

This would be an easy one for someone to take k<=1M to n=25K if anyone is interested.

Base 15 is heavier weight than base 7 but lower weight than base 3. From what I can tell, at this point, bases 3 and 15 respectively are the top 2 heaviest-weight bases.

[QUOTE]This would be an easy one for someone to take k<=1M to n=25K if anyone is interested.[/QUOTE]

I'll bite. 25K here we come. Wheeeeeee.