[QUOTE=MyDogBuster;347163]Those 2 k's (4421*10^n-1 and 7666*10^n+1) are already reserved by cruelty to an unknown upper limit.[/QUOTE]
I don't know if that will count as a reservation limit, but I will test both until I find a prime for each :boxer:

[QUOTE=firejuggler;347541]Hi. I have a question about R15.
I'm wondering if any work has been done on it above the k=5M mark.[/QUOTE]

No.

[QUOTE=Cruelty;347558]I don't know if that will count as a reservation limit, but I will test both until I find a prime for each :boxer:[/QUOTE]

I'm just curious. What range do you sieve when you start a potentially open-ended job like this? How do you determine an optimum sieve n-range and P-limit?

[QUOTE=gd_barnes;347588]I'm just curious. What range do you sieve when you start a potentially open-ended job like this? How do you determine an optimum sieve n-range and P-limit?[/QUOTE]
For this "project" I have sieved all initial k's together using sr2sieve until n=1M. As for P-limit I go with classic approach: measure iteration time at approx 2/3 of a range, and when sieving efficiency is below LLR-test efficiency, I freeze the sieve. Right now I am sieving S10 in the range 1M<n<2M, and continue testing R10 till n=1M.

R7
 

Reserving R7 20M-110M to n=50K.

reserving R15, k=5M to 10M for nupto 50K
(first part done, file sent to Gary, 432 k left at n 2500, 45 at 25000)

status report
 

S10 tested till n=1M (sieving 1M<n<2M range)
R10 tested till n=890000

S30
 

S30 tested n=300K-500K - nothing found

Results emailed - base released

R15 & S15
 

Reserving R15-3M-5M to n=100K
Reserving S15 2M-5M to n=100K

Did I mention I hate your speed MyDogBuster (I can't match up yours, that's the size of it)?
Reserving R15 5M-10M to n=50k (file for n=1 to 25k available on request)

[QUOTE]Did I mention I hate your speed MyDogBuster (I can't match up yours, that's the size of it)?
Reserving R15 5M-10M to n=50k (file for n=1 to 25k available on request) [/QUOTE]I'm just trying to get the 2M-5M's to 100K like the <1M k's.

It will be nice to get all of them to 100K.