Riesel primes of the form 57•2n-1

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

Current data

k , b : 57 , 2 Type : 3 Count : 52 Nash : 2672 Max n : 3,100,000 Date : 2020-11-12 Reserved : Riesel Prime SearchRiesel Prime Search/Reserved

1, 2, 4, 5, 8, 10, 20, 22, 25, 26, 32, 44, 62, 77, 158, 317, 500, 713, 1657, 1790, 2761, 2794, 3704, 4174, 6772, 14348, 16132, 16160, 16766, 21097, 29125, 40094, 44824, 49006, 67585, 74650, 94798, 162538, 173585, 239854, 450430, 565994, 707245, 839446, 1098272, 1110980, 1486214, 2103370, 2639528, 3093440, 3339932, 9075622

History

• 2022-08-07: Found n = 9075622, Ryan Propper
• 2021-03-21: Checked n = 1 - 1000000, Gary Barnes, double check, results included
• 2020-11-12: Found n = 3093440, Thomas Ritschel, RPS Megabit Drive 1
• 2018-04-11: Checked n = 1000000 - 1620000, 1679288 - 3000000, RPS Megabit Drive 1
• 2016-06-04: Found n = 2639528, Thomas Ritschel, RPS Megabit Drive 1
• 2015-07-12: Found n = 3339932, Predrag Kurtovic
• 2011-11-07: Found n = 2103370, Larry Soule, RPS Megabit Drive 1
• 2011-03-02: Found n = 1486214, Peter Benson, RPS Megabit Drive 1
• 2010-11-10: Found n = 1110980, Peter Benson, RPS Megabit Drive 1
• 2010-11-07: Found n = 1098272, Larry Soule, RPS Megabit Drive 1
• 2010-10-24: Reserved by RPS Megabit Drive 1 for n > 1000000
• 2009-07-30: Reserved by Borys Jaworski for sieving only n=1700000-5000000
• 2009-07-26: Checked n = 1620000 - 1652084?, (unknown), See range done at RPS other completed ranges.
• 2009-01-09: Checked n = 950000 - 990757, 1652084 - 1679288, Peter Benson
• 2008-01-03: Checked n = 870000 - 1000000?, Predrag Minovic ?
• 2008-01-03: Checked to n = 870000, RPS Drive 5, released
• 2007-12-16: 839446 confirmed, Adam Sutton, RPS Drive 5
• 2007-08-02: Found n = 707245, Carlos Eduardo Pinho, RPS Drive 5
• 2007-04-27: Found n = 839446, Peter Benson
• 2007-03-14: Found n = 565994, David Metcalfe, RPS Drive 5
• 2006-12-22: Found n = 450430, David Metcalfe, RPS Drive 5
• 2006-11-12: Reserved by RPS Drive 5, for n > 400000
• 2006-02-06: Checked n = 100000 - 110000, Thomas Ritschel, double-check
• 2004-12-24: Checked to n = 400000, Predrag Minovic, released
• 2004-12-04: Checked to n = 330000, Predrag Minovic
• 2004-11-21: Found n = 239854, Predrag Minovic
• 2004-08-06: Checked to n = 210000, Steven Harvey, released
• 2004-08-03: Checked to n = 208000, Steven Harvey
• 2004-08-01: Checked to n = 203857, Steven Harvey
• 2004-07-26: Reserved by Steven Harvey from n=200000
• 2004-06-09: Found n = 173585, Jocelyn Larouche
• 1999-04-24: Found n = 29125, Dale Andrews
• 1989: Found n = 6772, Sergio Zarantonello, Joel Smith, Gene Smith, Bodo Parady, Landon Curt Noll, John Brown