[quote=mdettweiler;213414]Finally! A prime! After almost 2 months of searching on my dualcore, I pop a 10K range onto my quad and pull out a prime within the first 1K:

[URL="http://primes.utm.edu/primes/page.php?id=92527"]51255*6^264988+1[/URL] is prime!

Additionally, this accomplishes a personal goal for me: I haven't found a top-5000 prime in a [I]really[/I] long time (almost a year now--last one was submitted May 19, 2009), and have been trying for a while now to break that stretch. :smile:

BTW: since my 262K-264K range on my dualcore is below this prime, I'll leave k=51255 in that range. As far as 264K-274K goes, PRPnet automatically removed the k as soon as the prime was found.

Gary, could you update the posted file as soon as you get the chance?[/quote]


Congrats on a nice big one Max! You were long overdue for one!

This is when it's fun to update the pages. :smile:

Your dualcore is just no good. Stick with the quad. lol

Who says my dualcore's no good at finding primes :big grin::

[URL="http://primes.utm.edu/primes/page.php?id=92611"]61340*6^262453+1[/URL] is prime!

I actually found this one 4 days ago but didn't notice it until now. :smile: I must say, though, I'm rather surprised at how close this prime is to my last one (at 264K), given that there's a 32K gap between the next-lower prime and this one. There definitely seems to be some credence to the idea that "primes come in bunches". :smile:

[quote=mdettweiler;214312]There definitely seems to be some credence to the idea that "primes come in bunches". :smile:[/quote]
Certainly seems that way, but I bet if you were to actually examine all the relevant data (not just the bits and bases that support it), you'd see that it's not by any significant amount more than statistics would predict.

262K-264K done, 1 prime previously reported.

264K-274K done, 1 prime previously reported.

Reserving 274K-276K.

274K-276K done, no primes. Reserving 276K-278K.

Reserving 278K-288K.

Well, that was fast:

[URL="http://primes.utm.edu/primes/page.php?id=92889"]124221*6^278517+1[/URL] is prime!

Now this base is down to only 20 k's remaining--nice round number there. :smile:

Wow, nice! I must say that base 6 k's have consistently fallen faster than expected...and at 200K+ digits, those are pretty nice ones!

276K-278K done, no primes. Reserving 288K-290K.

278K-288K done, 1 prime previously reported; results attached.

288K-290K done, no primes. Reserving 290K-292K.

290K-292K done, no primes. Reserving 292K-294K.

Reserving 294K-314K. :showoff: (Normally I would stick to no more than 10K at a time, but this is intended to keep all my cores busy throughout my upcoming week-long vacation.)