Riesel primes of the form 229•2n-1

Reserved! This sequence is currently reserved by: Michael Curtis

Current data

k , b : 229 , 2 Count : 50 Nash : 2195 Max n : 2,000,000 Date : 2021-10-22 Reserved : Michael CurtisMichael Curtis/Reserved

1, 3, 7, 19, 25, 27, 71, 97, 231, 235, 291, 295, 313, 347, 491, 511, 531, 571, 803, 1499, 1523, 1607, 1743, 2161, 2231, 3113, 5511, 5863, 6039, 8055, 8443, 9707, 12155, 12195, 21049, 24271, 34403, 34879, 56491, 58839, 162583, 207863, 220147, 560259, 586795, 715459, 969073, 1670843, 2331017, 2581111

History

• 2021-10-22: Found n = 2331017, Michael Curtis
• 2020-03-13: Restarted, Michael Curtis
• 2017-12-18: Found n = 2581111, Michael Curtis
• 2016-01-03: Checked to n = 2000000, Michael Curtis
• 2015-06-23: Found n = 1670843, Michael Curtis
• 2015-04-01: Checked to n = 1640000, Michael Curtis
• 2014-12-24: Checked to n = 1610000, Michael Curtis
• 2014-10-05: Checked to n = 1447000, Michael Curtis
• 2013-06-11: Checked to n = 1400000, Michael Curtis
• 2013-04-07: Checked to n = 1360000, Michael Curtis
• 2013-02-02: Reserved by Michael Curtis from n=13000000
• 2012-05-14: Checked to n = 1300000, James P. Burt, released
• 2011-12-31: Checked to n = 1100000, James P. Burt
• 2011-12-10: Reserved by James P. Burt from n=1000000
• 2009-07-30: Reserved by Borys Jaworski from n=1000000
• 2008-10-21: Checked to n = 1000000, Predrag Minovic
• 2008-10-08: Found n = 969073, David Metcalfe
• 2008-09-19: Found n = 715459, David Metcalfe
• 2008-09-12: Reserved by Predrag Minovic
• 2008-09-09: Reserved by NPLB Drive 4
• 2006-07-25: Found n = 586795, Predrag Minovic
• 2006-07-07: Found n = 560259, David Metcalfe
• 2005-08-07: Found n = 220147, Peter Benson
• 2005-01-11: Found n = 207863, Steven Harvey