Riesel primes of the form 61•2n-1

Reserved! This sequence is currently part of Multi Reservation 4: RPS Megabit Drive 1.

Current data

k , b : 61 , {{{Rb}}} Count : 55 Nash : 2170 Max n : 3,100,000 Date : 2020-11-12 Reserved : Riesel Prime SearchRiesel Prime Search/Reserved

3, 5, 9, 13, 17, 19, 25, 39, 63, 67, 75, 119, 147, 225, 419, 715, 895, 1025, 1103, 1179, 1345, 1829, 3855, 4159, 4493, 6039, 7799, 9073, 10543, 12883, 23807, 23957, 36163, 44047, 51975, 65573, 79393, 79949, 81987, 86349, 384287, 499175, 762417, 971585, 1124049, 1416365, 1487125, 1654383, 1734983, 2134577, 2381887, 2580689, 2936967, 3286535, 3366033

[[Category:Riesel {{{Rb}}}|#.....00061]][[Category:Riesel {{{Rb}}} Missing-range‎|#.....00061]]

History

• 2018-04-11: Checked to n = 3000000, RPS 1st Megabit Drive
• 2017-01-30: Found n = 2936967, Thomas Ritschel
• 2017-01-30: Found n = 3366033, Ruediger K. Eckhard
• 2016-06-22: Found n = 3286535, Ruediger K. Eckhard
• 2015-11-08: Found n = 2580689, Thomas Ritschel
• 2012-07-23: Found n = 2381887, Adam Sutton
• 2011-11-19: Found n = 2134577, Larry Soule
• 2011-05-11: Found n = 1734983, Larry Soule
• 2011-03-02: Found n = 1487125, Peter Benson
• 2011-02-13: Found n = 1416365, Larry Soule
• 2010-11-15: Found n = 1124049, Peter Benson
• 2009-07-30: Reserved by Borys Jaworski from n=1700000
• 2008-07-24: Found n = 1654383, Peter Benson
• 2008-07-07: Checked to n = 1000000, Gary Barnes released
• 2008-02-17: Found n = 762417, Gary Barnes
• 2008-02-07: Found n = 971585, Peter Benson
• 2008-02-01: Checked to n = 705000, Gary Barnes
• 2008-01-10: Checked to n = 600000, Gary Barnes
• 2008-01-03: Checked n = 400000 - 500000, Gary Barnes
• 2007-12-30: Checked to n = 800000, Jeffrey Sax
• 2007-12-10: Found n = 499175, Jeffrey Sax
• 2004-12-19: Found n = 384287, Predrag Minovic
• 1994: Found n = 7799, Harvey Dubner