Report top-5000 primes for all k<=1001 - Page 88

henryzz · 2011-01-23, 18:11

Quote:

Originally Posted by gd_barnes

Keep in mind that you need to create a brand new proof code and request that Prof. Caldwell transfer the prime to it. He will not want to add software or projects to an already existing proof code.

That's what I did. The code was deleted automatically and reassigned to Dennis Schreiber. That prime is now sorted. I suppose I had better sort out the other problems. I hate wasting his time this much. I will be more careful in future.

vaughan · 2011-02-03, 22:33

Its been a few weeks now but finally I found one.

905*2^772528-1 is Prime!
Added to database.

henryzz · 2011-02-11, 19:07

815*2^790042-1 is prime
I have found more primes this year already than last year with much less testing.

kar_bon · 2011-02-12, 00:39

983*2^779022-1 is prime

857*2^779812-1 is prime

3 days, 3 primes:
829*2^780551-1 is prime

next day, next prime:
935*2^781488-1 is prime

PCZ · 2011-02-15, 07:36

945*2^782674-1

gd_barnes · 2011-02-15, 08:19

Amazing. After an n=14K range with only 1 prime from n=765K-779K, we've had 6 primes in an n=4K range from 779K-783K; 5 already reported and 1 yet to report by Vaughan.

vaughan · 2011-02-15, 12:32

891*2^781918-1 is prime (sorry for the delay, got busy with work related phenomena)

kar_bon · 2011-02-15, 19:00

829*2^782489-1 is prime

gd_barnes · 2011-02-16, 06:02

Make that 7 primes in an n=4K range; 5 by Karsten!

kar_bon · 2011-02-16, 09:08

Quote:

Originally Posted by gd_barnes

Make that 7 primes in an n=4K range; 5 by Karsten!

The best run I've ever had so far:

5 primes at n~780k in a 3.5k n-range!

Looking here those 5 primes were found on 5 consecutive days: Feb. 11th to 15th.

Good average per day! Anyone to calculate the odds for such find?

vaughan · 2011-02-18, 08:38

829*2^785131-1 is prime

2011-02-12, 00:39	#961
kar_bon Mar 2006 Germany 2²×727 Posts	9832^779022-1 is prime 8572^779812-1 is prime 3 days, 3 primes: 8292^780551-1 is prime next day, next prime: 9352^781488-1 is prime Last fiddled with by kar_bon on 2011-02-14 at 23:37 Reason: new primes next days

2011-02-15, 12:32	#964
vaughan Jan 2005 Sydney, Australia 5·67 Posts	8912^781918-1 is prime (sorry for the delay, got busy with work related phenomena) Last fiddled with by vaughan on 2011-02-15 at 12:33*

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2011-02-03, 22:33	#959
vaughan Jan 2005 Sydney, Australia 517₈ Posts	Its been a few weeks now but finally I found one. 905*2^772528-1 is Prime! Added to database.

2011-02-11, 19:07	#960
henryzz Just call me Henry "David" Sep 2007 Cambridge (GMT/BST) 2×3³×109 Posts	815*2^790042-1 is prime I have found more primes this year already than last year with much less testing.

2011-02-15, 07:36	#962
PCZ Jun 2006 Chertsey Surrey UK 2·179 Posts	945*2^782674-1

2011-02-15, 08:19	#963
gd_barnes May 2007 Kansas; USA 2²·19·137 Posts	Amazing. After an n=14K range with only 1 prime from n=765K-779K, we've had 6 primes in an n=4K range from 779K-783K; 5 already reported and 1 yet to report by Vaughan.

2011-02-15, 19:00	#965
kar_bon Mar 2006 Germany 5534₈ Posts	829*2^782489-1 is prime

2011-02-16, 06:02	#966
gd_barnes May 2007 Kansas; USA 2²·19·137 Posts	Make that 7 primes in an n=4K range; 5 by Karsten!

2011-02-18, 08:38	#968
vaughan Jan 2005 Sydney, Australia 517₈ Posts	829*2^785131-1 is prime