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Old 2006-06-08, 01:07   #1
masser
 
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Default look what double checking uncovered...

78398*5^19313+1 is prime!
107258*5^19517+1 is prime!
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Old 2006-06-08, 02:29   #2
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Quote:
Originally Posted by masser
78398*5^19313+1 is prime!
107258*5^19517+1 is prime!
Nice. I will be freeing up one of my resources this weekend, so I can devote some time to this project again. Sieving will have to wait, but at least I should be able to look for new primes.
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Old 2006-06-08, 03:06   #3
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Is there a way to reserve ranges in the double check effort? Is it open to the general public?
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Old 2006-06-08, 22:11   #4
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Default Double Checking

If there is an interest in double checking, maybe another sticky should be started with all the K's that need to be checked so those who do it will be able to reserve k's. This would prevent confusion?
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Old 2006-06-09, 00:05   #5
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Double checking is currently an individual process. I started doing it as a test of srsieve and because I suspected that a few primes were missing in the 16384 < n < 32768 range. It's a nice chunk of work for some of my slower machines. I've currently checked all remaining Sierpinski's up to n = 22000, with plans to check up to n = 65536.

If anyone was interested, I would encourage them to sieve the Sierpinski k's for n > 65536, or perhaps start a double check effort for the Riesel k's.
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Old 2006-07-17, 17:13   #6
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111688*5^33840+1 is prime!
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Old 2006-07-17, 18:54   #7
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Quote:
Originally Posted by masser
111688*5^33840+1 is prime!
I actually don't know if I like this one :>
IIRC this is the third or fourth prime found in double checking...

Should we start double checking everything, or have you taken that task upon you, Masser?
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Old 2006-07-17, 20:06   #8
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Quote:
Originally Posted by michaf
I actually don't know if I like this one :>
IIRC this is the third or fourth prime found in double checking...

Should we start double checking everything, or have you taken that task upon you, Masser?
Maybe people need to start turning in their residuals. I think that's what they're called. I mean the unique string of characters that gets associated with every test.
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Old 2006-07-21, 17:09   #9
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278594*5^40528-1 is prime!

Last fiddled with by axn on 2006-07-21 at 17:09
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Old 2006-07-24, 17:24   #10
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280292*5^41864-1 is prime!
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Old 2006-07-31, 18:09   #11
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Default Third doublecheck prime

234226*5^44705-1 is prime!
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