Riesel primes of the form 285•2n-1

Reserved! This sequence is currently part of Multi Reservation 7: NPLB K300 Drive 1.

Current data

k , b : 285 , 2 Type : 315 Count : 81 Nash : 3331 Max n : 2,800,000 Date : 2024-11-13 Reserved : No Prime Left BehindNo Prime Left Behind/Reserved

1, 7, 8, 12, 19, 23, 41, 44, 47, 62, 63, 79, 197, 293, 472, 788, 956, 1083, 1232, 1533, 1539, 1673, 2399, 2827, 2993, 3327, 3816, 4072, 4152, 4156, 4392, 4436, 4492, 5079, 5112, 5747, 7193, 7604, 7934, 8640, 9699, 10361, 10870, 12374, 16197, 18120, 29199, 35807, 43443, 43817, 44627, 55047, 61064, 92091, 113660, 120326, 134121, 145143, 149907, 155107, 161183, 163071, 211544, 278758, 353143, 359364, 376840, 392397, 780300, 881240, 915913, 1011134, 1136696, 1145224, 1190854, 1563167, 1565353, 1801236, 2110099, 2138174, 2570839

History

• 2024-08-05: Found n = 2570839, Florian Piesker, NPLB K300 Drive 1
• 2024-05-04: Found n = 2138174, Florian Piesker, NPLB K300 Drive 1
• 2024-04-30: Found n = 2110099, Gary Barnes, NPLB K300 Drive 1
• 2024-04-23: Reserved by NPLB K300 Drive 1 for n > 2000000
• 2021-03-21: Checked n = 1 - 1000000, Gary Barnes, double check, results included
• 2021-03-20: Checked to n = 2000000, Gary Barnes, double-check n=1000000-1640000, released
• 2021-03-18: Found n = 1801236, Gary Barnes
• 2021-02-13: Reserved by Gary Barnes
• 2013-05-21: Checked to n = 1640000, Shashank Sharma
• 2013-04-03: Found n = 1565353, Shashank Sharma
• 2013-04-03: Found n = 1563167, Shashank Sharma
• 2013-02-05: Checked to n = 1500000, Shashank Sharma
• 2012-11-17: Checked to n = 1400000, Shashank Sharma
• 2012-05-14: Checked to n = 1300000, James P. Burt, released
• 2012-04-01: Found n = 1190854, James P. Burt
• 2012-03-08: Found n = 1145224, James P. Burt
• 2012-03-05: Found n = 1136696, James P. Burt
• 2011-12-31: Checked to n = 1100000, James P. Burt
• 2011-12-10: Reserved by James P. Burt from n=1000000
• 2011-12-07: Found n = 1011134, James P. Burt
• 2009-07-30: Reserved by Borys Jaworski for sieving only n=1000000-5000000
• 2008-07-04: Checked to n = 1000000, RPS Drive 5, released
• 2008-03-11: Found n = 915913, David Metcalfe, RPS Drive 5
• 2008-01-25: Found n = 881240, Predrag Minovic, RPS Drive 5
• 2007-10-20: Found n = 780300, Ed Goforth, Predrag Minovic, RPS Drive 5
• 2006-12-12: Checked to n = 470000, Predrag Minovic, released
• 2006-11-12: Reserved by RPS Drive 5, for n > 470000
• 2006-10-29: Found n = 392397, Predrag Minovic
• 2006-10-24: Found n = 376840, Predrag Minovic
• 2006-10-13: Checked to n = 365000, Predrag Minovic
• 2006-10-11: Found n = 353143, Predrag Minovic
• 2006-10-09: Found n = 359364, Predrag Minovic
• 2006-09-10: Found n = 278758, Predrag Minovic
• 2006-09-01: Reserved by Predrag Minovic from n=260000
• 2005-01-13: Found n = 211544, Steven Harvey
• 2004-02-26: Found n = 155107, Darren Wallace
• 2004-02-05: Found n = 149907, Steven Harvey
• 2003-11-05: Found n = 134121, Steven Harvey
• 2003-05-30: Found n = 120326, Steven Harvey
• 2003-02-26: Found n = 113660, Steven Harvey
• 2000-09-14: Found n = 92091, Dale Andrews
• 2000-01-10: Found n = 61064, Dale Andrews
• 2000-01-10: Found n = 55047, Dale Andrews
• 1999-12-03: Found n = 44627, Dale Andrews
• 1999-12-02: Found n = 43817, Dale Andrews
• 1999-12-02: Found n = 43443, Dale Andrews
• 1999-04-21: Found n = 35807, Dale Andrews
• 1999-04-18: Found n = 29199, Dale Andrews