2391*2^453770-1 is prime

Brian (PCZ) and I are duking it out for 4th place on # of primes at top-5000. We've been back-and-forth for several days after we both passed Beyond, who appears to be on a summer hiatus.

In other related news, Ian passed me for 33rd place on primes score and has subsequently moved to 32nd place. I've been at 33rd or 34th place for several months now due to a large gap between what is now 33rd and 35th place. This prime finally put me past Joseph Bohanon and back into 33rd place again. Ian and I are now just behind Kosmaj and Amphoria, the 2 main RPS admins, and in our sights. That should be fun...2 NPLB admins vs. 2 RPS admins on 2 similar Riesel prime projects. :smile:

In the mean time, we've now taken a 41-prime lead on RPS, have been maintaining mostly a 100-prime lead on PrimeGrid for a couple of weeks now, and only need 22 primes to reach 1000. Everyone keep crunching and we have a very good chance of being the 1st project to own 20% of the top-5000!

[QUOTE]In other related news, Ian passed me for 33rd place on primes score and has subsequently moved to 32nd place. I've been at 33rd (now 34th) for several months now due to a large gap between what is now 33rd and 35th place. This prime may have finally put me past Joseph Bohanon and back into 33rd place again. Assuming so, Ian and I are just behind Kosmaj and Amphoria, the 2 main RPS admins, and in our sights. That should be fun...2 NPLB admins vs. 2 RPS admins on 2 similar Riesel prime projects. :smile:

In the mean time, we've now taken a 40-prime lead on RPS, have been maintaining mostly a 100-prime lead on PrimeGrid for a couple of weeks now, and only need 22 or 23 primes to reach 1000. Everyone keep crunching and we have a very good chance of being the 1st project to own 20% of the top-5000![/QUOTE]

I'm really not into all this competition stuff, but it all sounds impressive.

[quote=MyDogBuster;182450]I'm really not into all this competition stuff, but it all sounds impressive.[/quote]

Yeah, something that I just entertain myself with as a way to procrastinate on doing some admin tasks that I need to do. lol There's plenty of those right now after getting back from the trip...drive results to process and verify primes, CRUS web pages to update, more files to post for mini-drive, manual results from Emails to save off and backup, you name it.

2547*2^454308-1 is confirmed prime
2043*2^455246-1 is confirmed prime

2793*2^455763-1 is prime

Added: [URL="http://primes.utm.edu/primes/page.php?id=89412"][U]89412[/U][/URL] 2011*2^455451-1 waiting for confirmation. 137108 digits long.

Edited: First one for this project. Nice job. Looks like the good professor liked it.

Thanks for helping us out Cipher! If you have any questions, everyone is very helpful around here.

In the mean time:

2637*2^456506-1 is prime

2379*2^456885-1 is prime

2313*2^457399-1 is prime
2775*2^457647-1 is confirmed prime

2091*2^459058-1 is prime

2729*2^459384-1 is prime
2079*2^459997-1 is prime
2005*2^460649-1 is prime
2955*2^460802-1 is confirmed prime
2461*2^461039-1 is prime
2043*2^461079-1 is confirmed prime

2657*2^461634-1 is prime
2867*2^461916-1 is prime

2671*2^462521-1 is prime

2691*2^462841-1 is prime

2973*2^464256-1 is prime

2519*2^464400-1 is prime
2523*2^465691-1 is prime
2241*2^465803-1 is prime

2393*2^466364-1 is prime
2781*2^466498-1 is prime

2845*2^467011-1 is prime

2505*2^468805-1 is confirmed prime

After a long drought for new primes on the 11th drive:

2483*2^469958-1 is prime

2113*2^470559-1 is prime

2757*2^471916-1 is prime
2721*2^472019-1 is prime
2907*2^472249-1 is prime

2553*2^472474-1 is prime
2559*2^472635-1 is prime
2655*2^472672-1 is confirmed prime
2745*2^473048-1 is confirmed prime
2739*2^473569-1 is prime
2107*2^474673-1 is prime
2581*2^475265-1 is prime
2697*2^475606-1 is prime
2745*2^475676-1 is confirmed prime
2123*2^476034-1 is confirmed prime
2211*2^477294-1 is confirmed prime

Added: [URL="http://primes.utm.edu/primes/page.php?id=89492"]89492[/URL] waiting for confirmation. 2021*2^462038-1 139091 Digits long.

Nice run Vaughan! :smile:

Edit by Max (9/20/09): whoops, I made this a wee bit confusing by merging the post with the particular run during cleanup. The run in question was somewhere in [url=http://www.mersenneforum.org/showpost.php?p=182443&postcount=563]post #563[/url], though I'm not sure exactly which ones there were part of the run. If memory serves, it was three or four separate primes in a row.

I figured I'd show these separately since they finally break a very long dry spell on the 11th drive for new primes:

2511*2^477451-1 is prime
2301*2^477586-1 is prime
2717*2^477604-1 is prime

2867*2^478064-1 is prime
2147*2^478528-1 is prime
2173*2^478599-1 is prime
2335*2^478607-1 is prime

2851*2^477783-1 [URL="http://primes.utm.edu/primes/page.php?id=89852"]Added[/URL]