Riesel primes of the form 195•2n-1

Reserved! This sequence is currently reserved by: Tanel Liiv

Current data

k , b : 195 , 2 Type : 315 Count : 85 Nash : 4106 Max n : 5,500,000 Date : 2023-11-01 Reserved : Tanel LiivTanel Liiv/Reserved

1, 3, 4, 6, 8, 9, 10, 14, 23, 26, 28, 35, 44, 46, 50, 55, 60, 63, 65, 78, 99, 100, 106, 111, 163, 178, 180, 364, 569, 825, 838, 958, 1292, 1425, 1531, 2020, 2259, 2434, 2492, 2520, 3310, 3624, 4195, 4206, 5103, 5139, 5478, 7198, 7335, 8123, 9903, 12239, 12826, 12830, 16954, 22535, 28943, 29238, 31470, 40958, 46815, 52983, 69094, 76259, 84016, 92376, 100974, 113681, 132478, 185009, 196785, 197051, 205668, 225594, 243999, 272695, 311215, 561444, 915929, 963608, 1369746, 1667115, 1983875, 4373994, 4685711

History

• 2023-11-01: Checked to n = 5500000, Tanel Liiv
• 2021-10-01: Checked to n = 5000000, Tanel Liiv
• 2021-03-05: Found n = 4685711, Tanel Liiv
• 2021-02-02: Checked to n = 4600000, Tanel Liiv
• 2020-11-03: Found n = 4373994, Tanel Liiv
• 2020-09-21: Checked to n = 4200000, Tanel Liiv
• 2020-06-11: Checked to n = 3700000, Tanel Liiv
• 2020-03-09: Reserved by Tanel Liiv from n=3000000
• 2019-04-29: Checked to n = 3000000, Thomas Ritschel, released
• 2019-02-11: Reserved by Thomas Ritschel, from n=2030000
• 2017-07-27: Checked to n = 2030000, William Byerly, released
• 2016-06-19: Checked to n = 2030000, William Byerly
• 2014-06-02: Reserved by William Byerly from n=2000000
• 2014-01-30: Checked to n = 2000000, Peter Benson, released
• 2014-01-29: Found n = 1983875, Peter Benson
• 2014-01-25: Found n = 1667115, Peter Benson
• 2014-01-22: Reserved by Peter Benson from n=1500000
• 2011-08-17: Checked to n = 1500000, Oscar Tutusaus Santandreu, released
• 2011-06-24: Found n = 1369746, Oscar Tutusaus Santandreu
• 2011-04-22: Reserved by Oscar Tutusaus Santandreu
• 2010-02-11: Checked to n = 1000000, Predrag Minovic, released
• 2009-12-05: Checked to n = 980000, Predrag Minovic
• 2009-11-12: Found n = 963608, Predrag Minovic
• 2009-11-03: Checked to n = 950000, Predrag Minovic
• 2009-05-31: Checked to n = 920000, Predrag Minovic
• 2009-05-18: Found n = 915929, Predrag Minovic
• 2009-04-04: Checked to n = 880000, Predrag Minovic
• 2009-02-13: Checked to n = 865000, Predrag Minovic
• 2006-05-23: Found n = 561444, Larry Soule
• 2006-02-09: Found n = 272695, Larry Soule
• 2003-02-28: Found n = 311215, Shane Findley
• 2003-02-26: Found n = 225594, Jiong Sun
• 2003-02-17: Found n = 243999, Shane Findley
• 2003-01-29: Found n = 205668, Jiong Sun
• 2003-01-17: Found n = 197051, Jiong Sun
• 2003-01-17: Found n = 196785, Jiong Sun
• 2003-01-11: Found n = 185009, Jiong Sun
• 2003-01-05: Found n = 132478, Jiong Sun
• 2003-01-04: Found n = 113681, Jiong Sun
• 2003-01-04: Found n = 100974, Jiong Sun
• 1999-02-03: Found n = 46815, Henri Lifchitz
• 1999-01-14: Found n = 40958, Henri Lifchitz
• 1998-12-28: Found n = 31470, Henri Lifchitz
• 1998-12-28: Found n = 29238, Henri Lifchitz
• 1998-12-28: Found n = 28943, Henri Lifchitz
• 1998-12-28: Found n = 22535, Henri Lifchitz
• 1998: Found n = 9903, Sergio Zarantonello, Joel Smith, Gene Smith, Bodo Parady, Landon Curt Noll, John Brown
• 1989: Found n = 7198, Sergio Zarantonello, Joel Smith, Gene Smith, Bodo Parady, Landon Curt Noll, John Brown