Riesel primes of the form 109•2n-1

Reserved! This sequence is currently reserved by: Michael Curtis

Current data

k , b : 109 , 2 Type : Low Count : 12 Nash : 594 Max n : 4,000,000 Date : 2023-07-17 Reserved : Michael CurtisMichael Curtis/Reserved

9, 149, 177, 419, 617, 1799, 3227, 6017, 12957, 141227, 646403, 1006883

History

• 2023-07-17: none, Michael Curtis
• 2021-03-21: Checked n = 1 - 1000000, Gary Barnes, double check, results included
• 2020-03-13: Checked n = 3000000 - 4000000, Michael Curtis
• 2017-07-03: Checked n = 2380000 - 3000000, Michael Curtis
• 2016-01-03: Checked n = 2000000 - 2380000, Michael Curtis
• 2015-02-18: Reserved by Michael Curtis from n = 2000000
• 2014-06-17: Checked n = 1620000 - 2000000, Michael Curtis, released
• 2013-06-11: Checked n = 1550000 - 1620000, Michael Curtis
• 2012-05-04: Checked n = 1480000 - 1550000, Michael Curtis
• 2011-12-04: Checked n = 1400000 - 1480000, Michael Curtis
• 2011-06-02: Checked n = 1350000 - 1400000, Michael Curtis
• 2010-10-28: Checked n = 1100000 - 1350000, Michael Curtis
• 2010-03-21: Checked n = 1000000 - 1100000, Michael Curtis
• 2010-02-22: Found n = 1006883, Michael Curtis
• 2010-01-12: none, Michael Curtis
• 2009-09-01: none, Michael Curtis
• 2009-06-22: Checked n = 900000 - 1000000, Michael Curtis
• 2009-03-13: Checked n = 800000 - 900000, Michael Curtis
• 2009-02-13: none, Michael Curtis
• 2008-12-03: Checked n = 700000 - 800000, Michael Curtis
• 2008-07-14: Checked n = 650000 - 700000, Michael Curtis
• 2008-02-14: Reserved by Michael Curtis
• 2008-01-12: Checked n = 640000 - 650000, Borys Jaworski, released
• 2008-01-10: Found n = 646403, Borys Jaworski
• 2008-01-06: Checked n = 600000 - 640000, Borys Jaworski
• 2007-10-01: Reserved by Borys Jaworski for n = 600000 - 2000000
• 2006-12-16: Checked n = 350000 - 600000, RPS Drive 4, released
• 2006-07-28: Reserved by RPS Drive 4 for n = 350000 - 600000
• 2004-11-28: Checked n = 200000 - 350000, Jeffrey Sax
• 2004-06-07: Checked n = 1 - 200000, (?), see Riesellist 2004-06-07