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Old 2008-03-04, 23:08   #243
japelprime
 
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"Erling B."
Dec 2005

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Default Sierp base 9 K=2036

Completed my range 100K-200K. No prime.
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File Type: txt lresults_serb2036base9plus1.txt (115.2 KB, 81 views)
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Old 2008-03-04, 23:38   #244
japelprime
 
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Default Sierp base 9 K=2036

Reserving more and taking Sierp base 9 to 300k (200k-300k)
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Old 2008-03-05, 00:05   #245
mdettweiler
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Default Riesel base 28 k=8991

Found PRP with PRP, proven with PFGW:

8991*28^16799-1 is prime!

Don't you just love it when you can find a prime for a k within a couple hours of reserving it?

Results file is attached.
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File Type: txt rieselbase28-k8991-results.txt (7.1 KB, 86 views)

Last fiddled with by mdettweiler on 2008-03-05 at 00:08 Reason: forgot the results file!
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Old 2008-03-07, 13:40   #246
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Taking Sierpinski base 11, k=958

Taking Riesel base 13, k=288
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Old 2008-03-10, 04:17   #247
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Sierp base 19 complete for all k's to n=5K. 2155 k's remaining.

Continuing to at least n=10K on all k's.
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Old 2008-03-14, 18:46   #248
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1873*30^50427-1 is prime! This is one of the lightweights, so it is good to find a prime for it.
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Old 2008-03-17, 18:49   #249
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Quote:
Originally Posted by tnerual View Post
k*31^n+1 tested up to n=5000 ... 3036 k remaining

i continue
2691 k remaining at n=6000

i continue
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Old 2008-03-24, 04:55   #250
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Sierp base 19 now tested to n=7550. Since n=5K, 358 more k's were eliminated. 1797 k's now remain. All k's remaining are shown on the Sierp base 19 reservations web page. If you haven't taken a look at it, it looks kind of funny to see so many numbers on one page. lol

Continuing on to n=10K.
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Old 2008-03-26, 03:03   #251
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All base 30 k are tested to 60,000. Nothing new to report.
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Old 2008-03-26, 19:10   #252
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Still in progress..

Sierp base 17: n ~ 120k
Sierp base 18: n ~ 180k

No primes :(

Last fiddled with by Xentar on 2008-03-26 at 19:10
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Old 2008-03-26, 20:54   #253
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Quote:
Originally Posted by Xentar View Post
Still in progress..

Sierp base 17: n ~ 120k
Sierp base 18: n ~ 180k

No primes :(
Whew! Those are TOUGH bases to crack! Good luck and thanks for the update.
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