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 2010-10-24, 14:32 #1 Kosmaj     Nov 2003 2·1,811 Posts The First Megabit Drive The First Megabit Drive I am pleased to announce our first multi-k drive featuring only megabit exponents. Initially we have the following 6 Ks sieved up to p=54T. k = 51, 57, 61, 65, 69, 87 We have more Ks being sieved right now. They will be added later, either as a part of this drive, or in a new drive. Happy hunting! Note (Jan. 26 2011): k = 47, 53 added as Batch-2 Note-2 (Aug. 12, 2014): k=51 and 69 removed from the drive, The following Ks added: k=35, n > 2520k k=37, n > 2500k, only n !=1 mod 10 k=103, n >= 2550223 k=111, n >= 2601487 As the results, the following 10 Ks are now being tested: 35, 37, 47, 53, 57, 61, 65, 87, 103, and 111. Found Primes Code: 47 [1]: 1025950 51 [3]: 1026910, 1027635, 1231665 53 [1]: 1632590 57 [6]: 1098272, 1110980, 1486214, 2103370, 2639528, 3093440, ... 3339932 61 [8]: 1124049, 1416365, 1487125, 1734983, 2134577, 2381887, 2580689, 2936967 65 [7]: 1374574, 1421088, 1505640, 2450614, 2583720, 2876718, 3080952 69 [6]: 1473217, 1566375, 2174213, 2410035, 2428251, 2649939 87 [7]: 1089098, 1120006, 1332741, 1358189, 1616138, 1852590, 2518122 111 [1]: 3060238 Total: 41 primes Primes found by others: June 22, 2016: 61*2^3286535-1 Ruediger K. Eckhard January 30, 2017: 61*2^3366033-1 Ruediger K. Eckhard Status Code:  Range of n Tested by Status 1,000,000-2,380,000 - RPS - Complete (26 primes) 2,380,000-2,384,000 - AES - Complete (61*2^2381887-1 is prime) 2,384,000-2,386,000 - Kosmaj - Complete 2,386,000-2,388,000 - AES - Complete 2,388,000-2,420,000 - Kosmaj - Complete (69*2^2410035-1 is prime) 2,420,000-2,424,000 - Carlos - Complete 2,424,000-2,444,000 - Carlos - Complete (69*2^2428251-1 is prime) 2,444,000-2,456,000 - Kosmaj - Complete (65*2^2450614-1 is prime) 2,456,000-2,468,000 - Carlos - Complete 2,468,000-2,480,000 - pepi37 - Complete 2,480,000-2,484,000 - Carlos - Complete 2,484,000-2,494,000 - Kosmaj - Complete 2,494,000-2,500,000 - kracker - Complete 2,500,000-2,506,000 - Thomas - Complete 2,506,000-2,508,000 - Kosmaj - Complete 2,508,000-2,550,000 - Thomas - Complete (87*2^2518122-1 is prime) 2,550,000-2,582,000 - Thomas - Complete (61*2^2580689-1 is prime) 2,582,000-2,600,000 - Thomas - Complete (65*2^2583720-1 is prime) 2,600,000-2,700,000 - Thomas - Complete (57*2^2639528-1 is prime) 2,700,000-2,800,000 - Thomas - Complete 2,800,000-2,900,000 - Thomas - Complete (65*2^2876718-1 is prime) 2,900,000-3,000,000 - Thomas - Complete (61*2^2936967-1 is prime) 3,000,000-3,100,000 - Thomas - Complete (111*2^3060238-1, 65*2^3080952-1, and 57*2^3093440-1 are primes) Available Files Extensively sieved by Psieve (the latest sieve file of July 31, 2011) (*) In parentheses: Percentage of tests requiring the indicated FFT lengths on AVX CPUs. Last fiddled with by Thomas11 on 2020-11-12 at 15:47
 2010-10-24, 14:32 #2 Kosmaj     Nov 2003 2·1,811 Posts Taking 1000-1003
 2010-10-24, 16:56 #3 lsoule     Nov 2004 California 23×3×71 Posts Taking 1003-1006
 2010-10-24, 17:08 #4 unconnected     May 2009 Russia, Moscow 2·3·449 Posts Taking 1006-1012.
 2010-10-24, 21:41 #5 pb386     Nov 2003 23×163 Posts taking 1012-1018
 2010-10-25, 04:26 #6 lsoule     Nov 2004 California 32508 Posts 1003-1006 just about done so I'm going to take 1018-1024
 2010-10-26, 16:38 #7 lsoule     Nov 2004 California 23·3·71 Posts 1003-1006 and 1018-1024 complete, no primes. Taking 1024-1030.
 2010-10-27, 16:56 #8 em99010pepe     Sep 2004 2·5·283 Posts Taking 1030-1042. Last fiddled with by em99010pepe on 2010-10-27 at 16:56
 2010-10-27, 16:59 #9 lsoule     Nov 2004 California 6A816 Posts 1024-1030 complete, 2 primes (both with k=51!) Taking 1042-1048
 2010-10-28, 16:21 #10 Kosmaj     Nov 2003 2·1,811 Posts Taking 1048-1051.
 2010-10-28, 19:03 #11 lsoule     Nov 2004 California 23×3×71 Posts 1042-1048 complete, no primes. Taking 1051-1057

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