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2010-09-16, 09:53
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#815 |
May 2008
Wilmington, DE
22×23×31 Posts |
Riesel 815
Riesel 815 the last k, tested n=25K-100K. Nothing found.
Results emailed. Base released |
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2010-09-16, 19:25
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#816 |
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May 2008
Wilmington, DE
285210 Posts |
Riesel 845
2*845^39406-1 is prime
Conjecture proven - Results emailed |
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2010-09-18, 00:22
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#817 |
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May 2008
Wilmington, DE
B2416 Posts |
Riesel 836
Riesel 836 the last k, tested n=25K-100K. Nothing found.
Results emailed. Base released |
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2010-09-18, 17:19
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#818 |
"Serge"
Mar 2008
Phi(4,2^7658614+1)/2
2·47·101 Posts |
8*3^896701-1 (427837 digits) is prime.
This proves R729 (in other words: 24*729^149450-1 is prime; it was sieved to 150K  lucky, lucky...)P.S. It remains to be seen if it is the smallest (with PFGW 3.3.6 in some ranges), but still - looks good to me. I ran it since February, on and off. Last fiddled with by Batalov on 2010-09-18 at 17:27 Reason: R729 |
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2010-09-18, 18:18
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#819 |
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May 2008
Wilmington, DE
54448 Posts |
Sierp 866
Sierp 866 the last k, tested n=25K-100K. Nothing found.
Results emailed. Base released |
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2010-09-18, 18:30
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#820 |
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May 2008
Wilmington, DE
22×23×31 Posts |
Sierp 879
Now here's a contrast to Serge finding a prime at the end of his sieve file.
10*879^25003+1 is prime - First test out of the box Conjecture proven - Result emailed |
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2010-09-18, 19:04
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#821 | |
"Mark"
Apr 2003
Between here and the
2×32×353 Posts |
Quote:
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2010-09-19, 08:22
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#822 |
May 2007
Kansas; USA
28AB16 Posts |
The following are complete to n=25K and released:
R706; k=83 & 155 remain; highest prime 174*706^18016-1 S686; k=116, 130, & 211 remain; highest prime 151*686^13722+1 S718; k=3, 69, 108, 153, & 222 remain; highest prime 18*718^4204+1 S730; k=84, 85, & 154 remain; highest prime 132*730^11966+1 S1009; k=46, 144, 246, & 294 remain; highest prime 276*1009^5004+1 That completes all 5kers (at n=5K) to n=25K. Now working on the 6kers. |
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2010-09-19, 22:13
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#823 |
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May 2008
Wilmington, DE
22·23·31 Posts |
Sierp 934
Sierp 934 the last k, tested n=25K-100K. Nothing found.
Results emailed. Base released |
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2010-09-19, 23:19
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#824 |
Jun 2008
Wollongong, .au
18310 Posts |
R603
Riesel 603 is complete to n=25,000. Exhausting.
The relevant files have been sent to sent to Gary. Lots and lots of k-values remain. |
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2010-09-20, 01:26
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#825 | |
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May 2007
Kansas; USA
29·359 Posts |
Quote:
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