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2008-08-06, 21:13
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#56 |
Sep 2004
B0E16 Posts |
I advise all to share the primes found so that we all can take them out from our current files reducing the testing time. Thanks.
michaf, you can take the 7 I found so far from your range. It will eliminate 147 candidates, 5880 seconds of work taken using a 2.96GHz machine. Last fiddled with by em99010pepe on 2008-08-06 at 21:19 |
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2008-08-06, 22:51
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#57 | |
Jan 2005
479 Posts |
Quote:
But thanks for warning anyway |
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2008-08-07, 06:40
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#58 |
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Sep 2004
2×5×283 Posts |
6859514 51502
40316644 51786 24925372 51893 14994106 57376 Last fiddled with by em99010pepe on 2008-08-07 at 07:39 |
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2008-08-07, 11:15
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#59 |
May 2007
Kansas; USA
101000101000112 Posts |
I have removed the 11 k's with primes found from the remaining posted files.
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2008-08-07, 22:45
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#60 |
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Sep 2004
2×5×283 Posts |
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2008-08-08, 05:46
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#61 |
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Jan 2005
479 Posts |
Please stop finding primes until I'm done now :) It's starting to disencourage ;)
I'm at 75% of my range and still have found not a single prime... Does anyone know the expected number of primes in the say 60k / 70k region? |
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2008-08-08, 06:26
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#62 |
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Sep 2004
54168 Posts |
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2008-08-08, 07:29
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#63 | |
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Sep 2004
2×5×283 Posts |
Quote:
The next primes will credit you. |
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2008-08-08, 07:35
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#64 | |
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May 2007
Kansas; USA
242438 Posts |
Quote:
In your n=1K range, there are approximately 2140 canditates for k's that didn't currently have a prime before Carlos's most recent single prime. The chance of a prime on a sieve to P=150G for this base and n-range are 1 in ~1500. Therefore, you should expect, on average, 1.4 primes in your range. At the beginning of the range, you had a 76% chance of finding a prime. So it's not particularly unusual that you wouldn't find a prime. Here is what is truly remarkable: Carlos's n=53K-56K range contained NO primes for MORE k's! If it were for the same # of k's, he would expect 4.3 primes with a 98.6% chance of finding at least one prime. But it was actually higher for both stats since he had more k's than the calculations that I am using. Primes are very strange!  Gary |
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2008-08-08, 17:20
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#65 |
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A Sunny Moo
Aug 2007
USA (GMT-5)
3·2,083 Posts |
Taking 63K-64K, will start on it when the NPLB rally is over.
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2008-08-08, 20:07
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#66 | |
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Jan 2005
479 Posts |
Quote:
taking 64-65k |
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