Riesel primes of the form 69•2n-1

Reserved! This sequence is currently reserved by: Ryan Propper

Current data

k , b : 69 , 2 Type : 3 Count : 100 Nash : 3438 Max n : 20,000,000 Date : 2024-06-13 Reserved : Ryan PropperRyan Propper/Reserved

1, 4, 5, 7, 9, 11, 13, 17, 19, 23, 29, 37, 49, 61, 79, 99, 121, 133, 141, 164, 173, 181, 185, 193, 233, 299, 313, 351, 377, 540, 569, 909, 1057, 1081, 1189, 1679, 2043, 2641, 3471, 3533, 3943, 5607, 9681, 12879, 14513, 15300, 21573, 30895, 32163, 39983, 47167, 47657, 49325, 51881, 64801, 65385, 65723, 66017, 69020, 74111, 76803, 79956, 83761, 84437, 100916, 110617, 165841, 195515, 234305, 234916, 236989, 239019, 352196, 362787, 464843, 580596, 613781, 820237, 831617, 867653, 978209, 1473217, 1566375, 1649423, 2174213, 2410035, 2428251, 2649939, 3097340, 3140225, 6639971, 6838971, 11604348, 11718455, 12231580, 13832885, 14977631, 15866556, 18831865, 19374980

History

• 2024-06-13: Checked to n = 20000000, Ryan Propper
• 2022-07-04: Found n = 19374980, Ryan Propper
• 2022-01-17: Found n = 13832885, Ryan Propper
• 2021-12-17: Found n = 18831865, Ryan Propper
• 2021-12-03: Found n = 14977631, Ryan Propper
• 2021-08-20: Found n = 15866556, Ryan Propper
• 2021-07-27: Found n = 12231580, Ryan Propper
• 2021-03-21: Checked n = 1 - 1000000, Gary Barnes, double check, results included
• 2020-12-04: Found n = 11718455, Ryan Propper
• 2020-12-04: Found n = 11604348, Ryan Propper
• 2020-12-04: Reserved by Ryan Propper, for n=7000000-12000000
• 2020-11-21: Checked to n = 7000000, Vincent Diepeveen, Paul Underwood, released
• 2020-03-01: Found n = 6838971, Vincent Diepeveen, Paul Underwood
• 2020-02-05: Found n = 6639971, Vincent Diepeveen, Paul Underwood
• 2018-04-15: Checked to n = 5500000, Vincent Diepeveen, Paul Underwood
• 2015-04-04: Checked to n = 3790000, Vincent Diepeveen
• 2015-02-21: Checked to n = 3614305, Vincent Diepeveen
• 2015-01-08: Checked to n = 3560000, Vincent Diepeveen
• 2014-10-05: Checked to n = 2980000, Vincent Diepeveen
• 2014-08-12: Checked n = 1000000 - 1620000, 1665716 - 2500000, RPS Megabit Drive 1 released
• 2014-06-12: Found n = 3140225, Vincent Diepeveen
• 2014-05-09: Found n = 3097340, Vincent Diepeveen
• 2014-01-15: Found n = 2428251, Carlos Eduardo Pinho, RPS Megabit Drive 1
• 2014-01-05: Found n = 2649939, Vincent Diepeveen
• 2013-09-18: Reserved by Vincent Diepeveen for n > 2500000
• 2013-05-27: Found n = 2410035, Predrag Minovic, RPS Megabit Drive 1
• 2012-01-06: Found n = 2174213, Larry Soule, RPS Megabit Drive 1
• 2011-03-27: Found n = 1566375, Peter Benson, RPS Megabit Drive 1
• 2011-03-05: Found n = 1473217, Larry Soule, RPS Megabit Drive 1
• 2010-10-24: Reserved by RPS Megabit Drive 1 for n > 1000000
• 2008?: Checked n = 1620000 - 1665716, Adam Sutton? See range done at web archive.
• 2008-08-19: Found n = 1649423, Adam Sutton
• 2007-12-02: ?, Justin Van Klein???, released
• 2007-11-18: Reserved by Justin Van Klein???
• 2007-07-23: Checked to n = 1000000, Larry Soule, released
• 2007-06-25: Checked to n = 987000, Larry Soule
• 2007-06-08: Found n = 978209, Larry Soule
• 2007-03-19: Checked to n = 932000, Larry Soule
• 2007-01-21: Checked to n = 906000, Larry Soule
• 2006-12-01: Checked to n = 882000, Larry Soule
• 2006-11-01: Found n = 867653, Larry Soule
• 2006-10-13: Checked to n = 853000, Larry Soule
• 2006-09-12: Found n = 831617, Larry Soule
• 2006-09-05: Checked to n = 825000, Larry Soule
• 2006-08-29: Found n = 820237, Larry Soule
• 2006-07-05: Checked to n = 773000, Larry Soule
• 2006-05-31: Checked to n = 735000, Larry Soule
• 2006-04-30: Checked to n = 700000, Larry Soule
• 2006-03-06: Checked to n = 640000, Larry Soule
• 2006-02-14: Found n = 613781, Larry Soule
• 2006-01-24: Checked to n = 580000, Larry Soule
• 2006-01-23: Found n = 580596, Larry Soule
• 2005-12-06: Reserved by Larry Soule for n > 500000
• 2004-11-28: Checked to n = 500000, Jeffrey Sax
• 2004-10-23: Found n = 464843, Jeffrey Sax
• 2004-09-04: Found n = 362787, Jeffrey Sax
• 2004-08-29: Found n = 352196, Jeffrey Sax
• 2004-06-27: Found n = 239019, Jeffrey Sax
• 2004-06-27: Found n = 236989, Jeffrey Sax
• 2004-06-27: Found n = 234916, Jeffrey Sax
• 2004-06-27: Found n = 234305, Jeffrey Sax
• 2004-06-09: Found n = 195515, Jeffrey Sax
• 2002-12-30: Found n = 165841, Jiong Sun
• 2002-12-16: Found n = 110617, Jiong Sun
• 2002-12-15: Found n = 100916, Jiong Sun
• 1999-09-08: Found n = 84437, Dale Andrews
• 1999-09-07: Found n = 83761, Dale Andrews
• 1999-09-02: Found n = 79956, Dale Andrews
• 1999-08-29: Found n = 76803, Dale Andrews
• 1999-08-26: Found n = 74111, Dale Andrews
• 1999-07-24: Found n = 69020, Dale Andrews
• 1999-07-20: Found n = 66017, Dale Andrews
• 1999-07-20: Found n = 65723, Dale Andrews
• 1999-07-19: Found n = 65385, Dale Andrews
• 1999-07-19: Found n = 64801, Dale Andrews
• 1999-07-12: Found n = 51881, Dale Andrews
• 1999-07-11: Found n = 49325, Dale Andrews
• 1999-07-10: Found n = 47657, Dale Andrews
• 1999-07-10: Found n = 47167, Dale Andrews
• 1998-08-03: Found n = 32163, Richard Jones
• 1998-04-11: Found n = 30895, Dale Andrews
• 1989: Found n = 39983, Sergio Zarantonello, Joel Smith, Gene Smith, Bodo Parady, Landon Curt Noll, John Brown