First of all: congratulations! :tu:
[QUOTE=gd_barnes;188719]One that is very close to proof and that would stomp all records is Sierp base 10. It has just one k remaining for a conjecture of k=9175! Cruelty is currently searching it at n=270K. Bring on that final prime Cruelty! :smile:[/QUOTE]Actually, I've just crossed n=280k, and should be near 300k by the end of September for both Riesel and Sierpinski @ base = 10.

[quote=MyDogBuster;188684]I'll reserve those 14 k's and test them to at least n=25K.[/quote]


My guess is somewhere north of n=25K, you'll need to sieve it a little more.

My doublecheck of Riesel base 23, n=180K-200K is complete. No primes were found, and no errors were found when I compared these results with the portion that Willem originally posted for this range.

Riesel Base's 15 & 25
 

Riesel Base15-16.18K-30K-0M-1M-Results

4 primes found and proven with PFGW

Results emailed

527774*15^20486-1
986914*15^23240-1
296686*15^23407-1
481292*15^25491-1

Reserving Riesel Base 25 k<50K (25k's) n=25K-50K

[QUOTE=mdettweiler;188910]My doublecheck of Riesel base 23, n=180K-200K is complete. No primes were found, and no errors were found when I compared these results with the portion that Willem originally posted for this range.[/QUOTE]

What a relief, imagine the shame I'd feel if after all this time I was found out to be a fraud!

In jest, Willem

[quote=Siemelink;188916]What a relief, imagine the shame I'd feel if after all this time I was found out to be a fraud!

In jest, Willem[/quote]
LOL--don't worry, even if they were incorrect, it wouldn't have been the first time someone had an unstable machine (so not necessarily a fraud). :wink:

[quote=MyDogBuster;188911]Riesel Base15-16.18K-30K-0M-1M-Results

4 primes found and proven with PFGW[/quote]

Were you planning on unreserving this at this point? If so, I'll post the remaining n=30K-100K file on the web page with the 4 k's removed.

[QUOTE]Were you planning on unreserving this at this point? If so, I'll post the remaining n=30K-100K file on the web page with the 4 k's removed.[/QUOTE]

Yes, unreserve it.

Sierp base 31 is at n=17K. Continuing on to n=25K.

53 primes found for n=15K-16K.
44 primes found for n=16K-17K.

1405 k's remain.

The # of primes being found is dropping much more quickly than what I expected as the n-range progresses. I now expect that there will be ~1100 k's remaining at n=25K. At n=10K, I had expected it to be ~900 k's remaining. My hope is to at least bring it down to less than the 1123 k's remaining for Sierp base 19 at n=25K.

In case I keel over tomorrow, attached is a list of primes for n=10K-17K; 529 primes total. :smile:


Gary

Sierp base 25 is complete to n=10K; 337 k's remain. Ian will be taking over from here and testing it up to n=25K.

The k's remaining are shown on the web pages. I haven't cross referenced and removed k's where converted Sierp base 5 primes are the equivalent of base 25 primes nor k's where the base 5 project is effectively searching. The 337 k's remaining is correct if you don't account for the base 5 primes and effort. I expect there will be around 250 k's remaining after removing them.

Ian, I'll probably have that taken care of and a sieve file for you within about 2-3 days.


Gary

All Sierp base 5 k's and primes from the base 5 project have been cross referenced, converted to Sierp base 25 k's, and balanced.

Balancing:

337 base 25 k's remaining at n=10K only counting primes n<=10K.

Subtract 63 base 5 primes for n>10K base 25 (n>20K base 5) found by the base 5 project that convert to base 25 k's.

Remain: 264 base 25 k's remaining without a prime of any size.

Subtract 33 base 5 k's that are remaining and being searched by the base 5 project that convert to base 25 k's.

Remain: 231 base 25 k's for CRUS to search starting from n=10K.

The web pages now reflect this new info. I also updated the search limits for Riesel base 25 as they correspond to ongoing testing on the base 5 project.

Ian, I'm removing k's in the sieve file now. After doing that, I'll determine optimal depth, sieve more as needed (currently at P=20G), and send the file your way...likely in ~1-2 days. Sorry about the delay.

Whew...I'm glad that's done! :smile:


Gary