If you decide to keep working on this kvalue, we can add it to the lowweight stats page on 15k.org. At least that way there will be public record that you're working on it!
curtis 
Curtis, that will be great. If it is possible to add it there please do so. I would like to credit RPS for any potential finding, anyway.
Dr. Broadhurst wasn't sure how far he test this k. He said that it would be best to assume that he stopped work on that k as soon as he found this... [URL="http://primes.utm.edu/curios/page.php?number_id=526"][COLOR=#800080]http://primes.utm.edu/curios/page.php?number_id=526[/COLOR][/URL] (not sure what that mean, if anyone know please explain). I will continue working this k up to 2M. So, please include it in lowweight stats page. Thanks. 
I sent a lowweight update to Kosmaj just before checking the forum he'll get it on the server in a couple days. I hope/plan to update the page once a month, now that I understand how to edit the page without making a mess. Expect a midapril update with your kvalue as the bottom (largest) value on the lowweight page. I'll also add the kvalues Thomas has referenced in his recent posts.
Post a reply when you've cleared the 150220k range, so I can note that also. Curtis 
Your [URL="http://www.15k.org/lowweight.htm"]page[/URL] is up!

One more reservation: 399239.
It produced a small prime at 253688 already. I'm running it to 1 million only on some slow machines. curtis 
I have checked k=177941, n from 1to 1M. Found only two primes:
177941*2^341 177941*2^1541 I'm unreserving this k. 
I already test K=2147483647 from n=2 to 150k and from 220k to 350k, currently work 350k to 500k range. Plan to do it up to 2M. I find only two primes, for n=97 and n=96001.

Range n=150k to 220k for K=2147483647 is completed. Range n=350k to 500k will be completed in a few days.
No new primes. 
Range n=350k to 500k for K=2147483647 is completed. No new primes.
New target... n=1M. 
Monthly update:
131707 done to 1.75M, sieved to 3M 167021 done to 1.05M, sieved to 2M 399239 done to 400k, sieved to 1M 9770317 done to 1.7M, sieved to 2M 13900807 done to 1.7M, sieved to 4M. 24384313 done to 1.075M, sieved to 2M. I'll update the webpage this week. Curtis 
Here is a list of 31 k I'm currently looking at, and the primes I've found so far.
All have been tested up to n=475k, trying to reach n=1M sometime... [CODE] k primes  20168077  24560197 1641, 145641 32859551  65581091  68816591 38, 4358 73595677 166825 73710809  80625343 1319 80889761 242, 4994, 10034 82742263 1311 95551177 329 100596217  106074103 475699 111081793  118130917  119543999  121273931  129833999  130562741  137609411  145097801  147453749  151791539 60 154074187  178293187  178348783  179337419  209102797  210037627  210215609 828 214943261  [/CODE] I also like to reserve the following 5 k, formerly tested by Joss: 2308121, 4278899, 14961487, 26161207, 40293059 
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