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2009-09-25, 05:00
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#100 |
Nov 2003
2×1,811 Posts |
Congrats to David (c4) on the new record Mersenne cofactor:
(2^17683-1)/(234000819833373807217*62265855698776681155719328257) (5274 digits) Finding a 29-digit factor 62265855698776681155719328257 of a 5303-digit number is a major factoring achievement! |
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2009-10-19, 21:00
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#101 |
Apr 2004
3×61 Posts |
new GW
103444*27^103444-1 Generalized Woodall, ninth largest known.
Steven Harvey |
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2009-12-10, 23:19
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#102 |
Sep 2004
2·5·283 Posts |
Last fiddled with by Kosmaj on 2009-12-11 at 01:08 Reason: "-1" added |
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2009-12-11, 00:01
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#103 |
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I quite division it
"Chris"
Feb 2005
England
31×67 Posts |
Good ol' k=27 strikes again.
27*2^627794-1 was my first top-5000 prime, with an entrance rank of 198 that I still haven't beaten. |
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2009-12-11, 21:48
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#104 |
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Jan 2009
22·5 Posts |
563528*13^563528-1 is now the biggest GW by far and breaks the base 13 duck at last.
Last fiddled with by Vato on 2009-12-11 at 21:49 Reason: removed space |
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2010-10-01, 18:37
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#105 |
Nov 2004
California
23·3·71 Posts |
Near-repdigits:
99999993*10^180207-1 180215 L184 Oct 2010 (Near-repdigit) 99999993*10^106947-1 106955 L184 Oct 2010 (Near-repdigit) The first one is the second largest and missed being the largest by about 30 digits. The second is the 10th largest Near-repdigit. |
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2010-10-02, 09:01
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#106 |
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Nov 2003
2·1,811 Posts |
Larry, congrats on nice primes. I hope you reclaim the NRD record soon.
I stopped all my "side" project a while ago. I found my last NRD more than 3 years ago ... |
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2010-10-25, 13:03
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#107 |
Mar 2010
On front of my laptop
7×17 Posts |
New record AP4 by Broadhurst - 9,000 digits longer than the previous one!
 http://primes.utm.edu/primes/page.php?id=95651 Last fiddled with by Merfighters on 2010-10-25 at 13:04 |
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2011-01-14, 07:07
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#108 |
May 2005
65816 Posts |
2^1667321-2^833661+1 (501914 digits) Gaussian Mersenne norm 38
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2011-01-17, 04:28
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#109 |
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Nov 2003
2×1,811 Posts |
Cruelty
Congrats on a nice prime! Can you share exe times, hardware details with us. Thanks. |
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2011-01-20, 13:10
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#110 |
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May 2005
23×7×29 Posts |
Thanks!
 The search runs on single core of C2Q @ 3GHz. Single test using LLR takes ~4800 sec. |
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