Riesel primes of the form 309•2n-1

Reserved! This sequence is currently part of Multi Reservation 27: NPLB Drive High-n.

Current data

k , b : 309 , 2 Type : 3 Count : 59 Nash : 2060 Max n : 4,800,000 Date : 2023-11-20 Reserved : No Prime Left BehindNo Prime Left Behind/Reserved

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

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