Riesel base 39 k=474 is complete to n=150K, no primes. Results are attached for 100K-150K; releasing.

I've taken Riesel base 40 k=1805 up to 10K to round off my earlier effort up to k=2000. No primes were found; results attached for 5K-10K.

Sierp Base 80
 

Reserving Sierp Base 80 (all k's) n=25K-100K

Reserving Sierp base 82 to n=25K, 1097 k's remain at n=100 :smile:

Kenneth!

Riesel Base 87
 

Riesel Base 87 complete n=25K-100K

4 primes found and proven (see list) - Results emailed - Base released

One of the primes hits the Top 5000

186*87^30922-1
472*87^33116-1
1628*87^42252-1
1004*87^76524-1 [URL]http://primes.utm.edu/primes/page.php?id=90634[/URL]

I've taken two more Riesel base 40 k's up to n=10K, now leaving all k's <5K complete to 10K. I was finally able to pull a prime out of this base on one of them:

4673*40^6440-1 is prime! (18.1555s+0.0011s)

Results are attached for k=3650 from 5K to 10K, and for k=4673 from 5K to the prime.

Sierp base 39 is complete to n=10K. 616 k's remaining. Now unreserved. Here's a breakdown of k's remaining at different n-depths:

n=2.5K; 1101 k's remain
n=5K; 806 k's remain
n=10K; 616 k's remain

k's remaining will be shown on the web pages shortly.

Sierp base 40 should be done to n=10K in < 2 days. I'm expecting it to have ~680 k's remaining...barely more than base 39 for a conjecture ~5 times as high! It should drop to less remaining by n=15K-20K somewhere.


Gary

Hmm...that sounds like an interesting base. I'll [b]reserve Sierp. base 39 from 10K-25K[/b] and see how it goes. :smile:

Sierp base 40 is complete to n=10K. 683 k's remaining. Now unreserved. Here's a breakdown of k's remaining at different n-depths:

n=2.5K; 1374 k's remain
n=5K; 936 k's remain
n=10K; 683 k's remain

k's remaining shown on the web pages.

Sierp base 40 should drop to less k's remaining than Sierp base 39 by n=~20K for a conjecture ~5 times as high! At n=10K, the remaining count is 683 to 616.

Reserving Sierp base 35 to n=10K. Finishing this will complete all Sierp bases <= 50 to n=10K except huge-conjectured bases 3/7/15.

I am running a lot of odd high bases, just to get a feeling.
I will carefully catalog what's there, and the ranges and result files, but for now, some cleared k's to include into the webpage:

[FONT=Arial Narrow]610*3^122522+1 is 3-PRP! (44.9233s+0.0035s) <== that's Sierp base 81, k=5490[/FONT]
[FONT=Arial Narrow]729*70^28625-1 is 3-PRP! (54.6545s+0.0047s)[/FONT]

Plus, two Riesel 61s... but don't have them right now on me. Taking Riesel base 61 to 50K, officially.