20101024, 14:32  #1 
Nov 2003
2·1,811 Posts 
The First Megabit Drive
The First Megabit Drive
I am pleased to announce our first multik 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 Batch2 Note2 (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*2^32865351 Ruediger K. Eckhard January 30, 2017: 61*2^33660331 Ruediger K. Eckhard Code:
Range of n Tested by Status 1,000,0002,380,000  RPS  Complete (26 primes) 2,380,0002,384,000  AES  Complete (61*2^23818871 is prime) 2,384,0002,386,000  Kosmaj  Complete 2,386,0002,388,000  AES  Complete 2,388,0002,420,000  Kosmaj  Complete (69*2^24100351 is prime) 2,420,0002,424,000  Carlos  Complete 2,424,0002,444,000  Carlos  Complete (69*2^24282511 is prime) 2,444,0002,456,000  Kosmaj  Complete (65*2^24506141 is prime) 2,456,0002,468,000  Carlos  Complete 2,468,0002,480,000  pepi37  Complete 2,480,0002,484,000  Carlos  Complete 2,484,0002,494,000  Kosmaj  Complete 2,494,0002,500,000  kracker  Complete 2,500,0002,506,000  Thomas  Complete 2,506,0002,508,000  Kosmaj  Complete 2,508,0002,550,000  Thomas  Complete (87*2^25181221 is prime) 2,550,0002,582,000  Thomas  Complete (61*2^25806891 is prime) 2,582,0002,600,000  Thomas  Complete (65*2^25837201 is prime) 2,600,0002,700,000  Thomas  Complete (57*2^26395281 is prime) 2,700,0002,800,000  Thomas  Complete 2,800,0002,900,000  Thomas  Complete (65*2^28767181 is prime) 2,900,0003,000,000  Thomas  Complete (61*2^29369671 is prime) 3,000,0003,100,000  Thomas  Complete (111*2^30602381, 65*2^30809521, and 57*2^30934401 are primes) 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 20201112 at 15:47 
20101024, 14:32  #2 
Nov 2003
2·1,811 Posts 
Taking 10001003

20101024, 16:56  #3 
Nov 2004
California
3250_{8} Posts 
Taking 10031006

20101024, 17:08  #4 
May 2009
Moscow, Russia
3^{2}·317 Posts 
Taking 10061012.

20101024, 21:41  #5 
Nov 2003
1304_{10} Posts 
taking 10121018

20101025, 04:26  #6 
Nov 2004
California
6A8_{16} Posts 
10031006 just about done so I'm going to take 10181024

20101026, 16:38  #7 
Nov 2004
California
2^{3}×3×71 Posts 
10031006 and 10181024 complete, no primes.
Taking 10241030. 
20101027, 16:56  #8 
Sep 2004
5416_{8} Posts 
Taking 10301042.
Last fiddled with by em99010pepe on 20101027 at 16:56 
20101027, 16:59  #9 
Nov 2004
California
2^{3}·3·71 Posts 
10241030 complete, 2 primes (both with k=51!)
Taking 10421048 
20101028, 16:21  #10 
Nov 2003
2×1,811 Posts 
Taking 10481051.

20101028, 19:03  #11 
Nov 2004
California
1704_{10} Posts 
10421048 complete, no primes.
Taking 10511057 
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