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 2006-05-20, 12:28 #12 pacionet     Oct 2005 Italy 3·113 Posts Found single prime: k= 113040057
 2006-05-24, 07:34 #13 pacionet     Oct 2005 Italy 3×113 Posts It seems to me that (in our first results) that there is 1 prime every 8-9 M rather than every 4-5M. Do you agree ? This change the probability of finding a twin ? Last fiddled with by pacionet on 2006-05-24 at 07:34
2006-05-25, 03:32   #14
MooooMoo
Apprentice Crank

Mar 2006

11·41 Posts

Quote:
 Originally Posted by pacionet It seems to me that (in our first results) that there is 1 prime every 8-9 M rather than every 4-5M. Do you agree ? This change the probability of finding a twin ?
I think the average prime density is still 1 prime every 4-5M. So far, there have been 17 primes discovered, and a total of 76M has been marked as complete. 76/17 = 4.47M per prime, which is about right.

We may have reserved all ranges less than 200M, but many of them are still in progress, meaning more primes may be found.

Last fiddled with by MooooMoo on 2006-05-25 at 03:33

 2006-05-31, 21:20 #15 lsoule     Nov 2004 California 23·3·71 Posts Two more primes: 211150695*2^195000-1 is prime! Time : 120.339 sec. 211965945*2^195000-1 is prime! Time : 91.001 sec.
 2006-06-02, 14:42 #16 lsoule     Nov 2004 California 23×3×71 Posts One more in 215-220M: 219831687*2^195000-1 is prime! Time : 95.747 sec.
 2006-06-05, 04:32 #17 lsoule     Nov 2004 California 6A816 Posts Two more found in the range 225-230M 227146953*2^195000-1 is prime! Time : 90.893 sec. 227525877*2^195000-1 is prime! Time : 30.864 sec.
 2006-06-06, 19:17 #18 pacionet     Oct 2005 Italy 15316 Posts 185M-195M : 4 single primes 186002877*2^195000-1 is prime! Time : 104.031 sec. 188277873*2^195000-1 is prime! Time : 105.508 sec. 192890547*2^195000-1 is prime! Time : 127.361 sec. 193308537*2^195000-1 is prime! Time : 106.427 sec.
 2006-06-07, 12:11 #19 John Renze     Nov 2005 24×3 Posts 40M-100M: 11 primes 48407103*2^195000-1 56985075*2^195000-1 62205915*2^195000-1 62977983*2^195000-1 66532947*2^195000-1 69833703*2^195000-1 76110153*2^195000-1 89562585*2^195000-1 89572875*2^195000-1 91188027*2^195000-1 95253645*2^195000-1
 2006-06-08, 16:49 #20 lsoule     Nov 2004 California 110101010002 Posts one prime from 230-235M 230052405*2^195000-1 is prime! Time : 140.762 sec.
 2006-06-12, 05:26 #21 lsoule     Nov 2004 California 6A816 Posts One prime from the 230-235M range 230052405*2^195000-1 is prime! Time : 140.762 sec.
 2006-06-12, 18:15 #22 lsoule     Nov 2004 California 23×3×71 Posts oops, meant to post the 260-265M prime 261512115*2^195000-1 is prime! Time : 92.314 sec.

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