Riesel primes of the form 309•2n-1

Reserved! This sequence is currently part of Multi Reservation 27: [[]].

Current data

k , b : 309 , 2 Type : 3 Count : 59 Nash : 2060 Max n : Date :

1, 4, 5, 7, 8, 28, 32, 43, 65, 77, 89, 121, 143, 161, 253, 413, 436, 689, 728, 892, 929, 1127, 1297, 1364, 1625, 1627, 1664, 2096, 2309, 6421, 6461, 7843, 8191, 8759, 10925, 11336, 12631, 14156, 16487, 35045, 40271, 40375, 41813, 69401, 79493, 97097, 174856, 263951, 274199, 290423, 315773, 387221, 480343, 780395, 795776, 805516, 954323, 1647947, 4745713

[[Category:|#.....00309]]

History

• 2023-08-25: Found n = 4745713, Oliver Kruse
• 2022-06-03: Reserved by NPLB Drive High-n, for 3000000<n<5000000
• 2022-06-03: Checked to n = 3000000, NPLB Drive 15, released
• 2014-12-29: Reserved by NPLB Drive 15, for n=2000000-3000000
• 2014-08-22: Checked to n = 2000000, Lennart Vogel, released
• 2014-08-17: Checked to n = 1700000, Lennart Vogel
• 2014-08-17: 1647947 confirmed, Lennart Vogel
• 2014-08-11: Reserved by Lennart Vogel, from n=1300000
• 2014-08-11: None, Albert J. Klein, released
• 2012-10-07: Checked to n = 1749545, Albert J. Klein
• 2012-07-02: Found n = 1647947, Albert J. Klein
• 2012-04-01: Checked to n = 1640000, Albert J. Klein
• 2012-03-01: Checked to n = 1600000, Albert J. Klein
• 2012-02-02: Checked to n = 1520000, Albert J. Klein
• 2012-01-01: Checked to n = 1490000, Albert J. Klein
• 2011-12-16: Checked to n = 1300000, Johnathan Chu, released
• 2011-12-01: Checked to n = 1440000, Albert J. Klein
• 2011-11-29: Checked to n = 1270000, Johnathan Chu
• 2011-10-24: Reserved by Albert J. Klein, for 1300000<n<2000000
• 2011-10-23: Checked to n = 1240000, Johnathan Chu
• 2011-06-26: Checked to n = 1170000, Johnathan Chu
• 2011-04-17: Checked to n = 1130000, Johnathan Chu
• 2011-03-11: Checked to n = 1100000, Johnathan Chu
• 2011-02-09: Checked to n = 1070000, Johnathan Chu
• 2011-01-11: Checked to n = 1050000, Johnathan Chu
• 2010-12-07: Reserved by Johnathan Chu, to n=1100000
• 2010-11-27: Reserved by Johnathan Chu, for 1000000<n<1020000
• 2009-01-18: Checked to n = 1000000, Gary Barnes, released
• 2009-01-06: Checked to n = 965000, Gary Barnes
• 2009-01-03: Found n = 954323, Gary Barnes
• 2009-01-01: Checked to n = 946000, Gary Barnes
• 2008-12-26: Checked to n = 923000, Gary Barnes
• 2008-11-28: Checked to n = 910000, Gary Barnes
• 2008-11-14: Checked to n = 892000, Gary Barnes
• 2008-11-10: Checked to n = 600000, NPLB Drive 3, released
• 2008-10-31: Checked to n = 880000, Gary Barnes
• 2008-09-10: Checked to n = 851000, Gary Barnes
• 2008-09-03: Checked to n = 835000, Gary Barnes
• 2008-08-22: Checked to n = 808000, Gary Barnes
• 2008-08-21: Found n = 805516, Gary Barnes
• 2008-08-21: Found n = 795776, Gary Barnes
• 2008-08-13: Checked to n = 790000, Gary Barnes
• 2008-08-08: Found n = 780395, Gary Barnes
• 2008-08-07: Checked to n = 780000, Gary Barnes
• 2008-07-24: Checked to n = 743000, Gary Barnes
• 2008-07-14: Checked to n = 717000, Gary Barnes
• 2008-07-04: Checked to n = 684000, Gary Barnes
• 2008-06-17: Checked to n = 626000, Gary Barnes
• 2008-06-01: Reserved by Gary Barnes, for 600000<n<1000000
• 2008-03-06: Found n = 315773, James P. Burt
• 2008-03-06: 290423 confirmed, James P. Burt
• 2008-03-09: Found n = 387221, Ed Goforth
• 2008-03-01: Reserved by NPLB Drive 3, for 260000<n<600000
• 2007-08-03: Found n = 480343, Peter Benson
• 2004-08-01: Found n = 174856, Steven Harvey
• 2001-02-22: Found n = 97097, Kimmo Herranen
• 2001-02-20: Found n = 79493, Kimmo Herranen
• 2001-02-18: Found n = 69401, Kimmo Herranen