Riesel primes of the form 83•2n-1

Reserved! This sequence is currently reserved by: Erling Bergþórsson

Current data

k , b : 83 , 2 Count : 53 Nash : 2056 Max n : 4,100,000 Date : 2023-01-01 Reserved : Erling BergþórssonErling Bergþórsson/Reserved

2, 4, 8, 10, 14, 18, 22, 24, 26, 28, 36, 42, 58, 64, 78, 158, 198, 206, 424, 550, 676, 904, 1276, 1374, 1536, 1642, 2124, 2796, 5266, 5318, 8828, 11638, 22968, 35836, 53348, 55808, 79826, 105282, 112418, 129804, 144456, 216954, 624398, 654488, 791926, 851092, 910716, 1192950, 1437882, 1455358, 1461350, 1540750, 2411962

History

• 2023-01-01: Checked to n = 4100000, Erling Bergþórsson
• 2022-07-31: Checked to n = 4000000, Erling Bergþórsson
• 2022-01-02: Checked to n = 3800000, Erling Bergþórsson
• 2021-11-14: Checked to n = 3700000, Erling Bergþórsson
• 2021-07-27: Checked to n = 3600000, Erling Bergþórsson
• 2021-03-21: Checked n = 1-1000000, Gary Barnes, double check, results included
• 2020-10-29: Checked to n = 3500000, Erling Bergþórsson
• 2020-07-25: Checked to n = 3400000, Erling Bergþórsson
• 2020-05-28: Checked to n = 3300000, Erling Bergþórsson
• 2020-04-13: Checked to n = 3200000, Erling Bergþórsson
• 2020-03-04: Checked to n = 3100000, Erling Bergþórsson
• 2020-02-07: Checked to n = 3060000, Erling Bergþórsson
• 2019-11-30: Checked to n = 3020000, Erling Bergþórsson
• 2019-02-15: Reserved by Erling Bergþórsson from n=3000000
• 2018-07-16: Checked to n = 3000000, David Metcalfe, released
• 2018-05-02: Found n = 2411962, David Metcalfe
• 2018-02-18: Reserved by David Metcalfe
• 2013-05-23: Checked to n = 2000000, Peter Benson, released
• 2013-05-11: Reserved by Peter Benson from n=1600000
• 2011-10-31: Checked to n = 1600000, David Metcalfe, released
• 2011-10-10: Found n = 1540750, David Metcalfe
• 2011-10-04: Checked to n = 1490000, David Metcalfe
• 2011-09-27: Found n = 1461350, David Metcalfe
• 2011-09-27: Found n = 1455358, David Metcalfe
• 2011-09-27: Found n = 1437882, David Metcalfe
• 2011-09-19: Reserved by David Metcalfe from n=1200000
• 2010-12-23: Checked to n = 1200000, Borys Jaworski, released
• 2010-12-23: Found n = 1192950, Borys Jaworski
• 2010-11-30: Checked to n = 1130000, Borys Jaworski
• 2010-11-23: Reserved by Borys Jaworski from n=1120000
• 2009-07-30: Reserved by Borys Jaworski from n=1120000
• 2008-03-22: Found n = 910716, Mark Anderson
• 2008-02-24: Checked to n = 780000, Predrag Minovic
• 2008-02-23: Found n = 791926, Ed Goforth, Predrag Minovic
• 2007-09-12: Found n = 654488, Predrag Minovic
• 2007-08-26: Found n = 624398, Predrag Minovic
• 2007-08-16: Found n = 851092, Peter Benson
• 2004-11-27: Found n = 216954, Predrag Minovic
• 2000-09-25: Found n = 55808, Tom Kuechler
• 2000-09-25: Found n = 53348, Tom Kuechler
• 1999-01-07: Found n = 35836, Tom Kuechler
• 1999-01-07: Found n = 22968, Tom Kuechler
• 1984: Found n = 5318, Wilfrid Keller