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2010-07-08, 14:50
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#496 |
Mar 2010
Hampshire, UK
3×17 Posts |
Riesel 275 became a single-k base.
16*275^54825-1 is prime! k=4 remains at n=100K, extending search to n=150K. Results up to n=100K are attached. |
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2010-07-08, 18:55
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#497 |
"Serge"
Mar 2008
Phi(4,2^7658614+1)/2
100101000100002 Posts |
Reserving R277 to n=25K.
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2010-07-09, 19:28
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#498 |
"Serge"
Mar 2008
Phi(4,2^7658614+1)/2
24×593 Posts |
R277 at 10.7K, 47 k remain, continuing to 25K.
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2010-07-11, 05:48
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#499 |
"Serge"
Mar 2008
Phi(4,2^7658614+1)/2
24·593 Posts |
S390 is proven
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2010-07-11, 06:46
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#500 |
May 2007
Kansas; USA
101000101000112 Posts |
S308 is complete to n=25K; 1 prime found for n=5K-25K; 5 k's remaining; base released.
S311 is complete to n=25K; 1 prime found for n=5K-25K; only k=10 & 76 remaining; base released. S318 is complete to n=25K; 2 primes found for n=5K-25K; only k=56 & 89 remaining; base released. S410 is complete to n=25K; 1 prime found for n=5K-25K; 6 k's remaining; base released. Reserving S326, S340, S386, and S414 to n=25K. Last fiddled with by gd_barnes on 2010-07-11 at 21:23 |
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2010-07-11, 19:40
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#501 |
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"Serge"
Mar 2008
Phi(4,2^7658614+1)/2
24·593 Posts |
R470 is complete to n=100K; 1 k remaining; base released.
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2010-07-12, 00:37
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#502 |
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May 2007
Kansas; USA
101000101000112 Posts |
Max is reserving the 3 k's on S257 to n=100K. I talked him into that one since I'm trying to find primes for k=4 on some bases.
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2010-07-12, 09:17
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#503 |
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May 2007
Kansas; USA
101×103 Posts |
S386 is complete to n=25K; only k=30 remaining; highest prime 31*386^1010+1; base released.
S414 is complete to n=25K; only k=24 remaining; highest prime 61*414^236+1; base released. |
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2010-07-13, 10:37
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#504 |
May 2008
Wilmington, DE
22·23·31 Posts |
Sierp 458
Sierp 458, the last k, tested n=25K-100K. Nothing found.
Results emailed. Base released |
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2010-07-14, 09:09
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#505 |
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May 2007
Kansas; USA
101·103 Posts |
S326 is complete to n=25K; 2 primes found for n=5K-25K; 3 k's remaining; base released.
S340 is complete to n=25K; no primes found for n=5K-25K; 2 k's remaining; base released. |
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2010-07-15, 08:51
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#506 |
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May 2007
Kansas; USA
28A316 Posts |
I've done some small-conjecture testing on some bases that had 1 or 2 k's remaining at n=5K the last 2-3 days. Here is what was done for bases <= 500:
S406 with CK=186 has only k=100 remaining; highest prime 16*406^420+1 S496 with CK=141 has only k=15 remaining; highest prime 27*496^551+1 Both have been tested to n=25K and are released. Last fiddled with by gd_barnes on 2010-07-16 at 21:26 Reason: remove bases > 500 |
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