Riesel primes of the form 303•2n-1

Reserved! This sequence is currently part of Multi Reservation 27: NPLB Drive High-n.

Current data

k , b : 303 , 2 Type : 3 Count : 34 Nash : 1488 Max n : 4,800,000 Date : 2023-11-20 Reserved : No Prime Left BehindNo Prime Left Behind/Reserved

3, 6, 7, 12, 19, 24, 102, 159, 198, 258, 426, 664, 852, 1015, 2047, 2307, 3282, 8239, 11886, 14932, 18306, 69568, 90642, 98226, 115272, 144768, 177652, 978724, 2417452, 2562423, 2887603, 2949403, 4471002, 4748019

History

• 2023-08-29: Found n = 4748019, Oliver Kruse
• 2022-12-24: Found n = 4471002, Oliver Kruse
• 2022-06-03: Reserved by NPLB Drive High-n, for 3000000<n<5000000
• 2022-06-03: Checked to n = 3000000, NPLB Drive 15, released
• 2022-05-26: Found n = 2949403, Gary Barnes
• 2022-05-14: Found n = 2887603, William Byerly
• 2018-11-20: Found n = 2562423, Ricky L. Hubbard
• 2018-06-21: Found n = 2417452, Stuart Mullage
• 2014-12-29: Reserved by NPLB Drive 15, for n=2000000-3000000
• 2012-04: Checked to n = 2000000, Dmitry Domanov
• 2010-06-26: Checked to n = 1500000, Dmitry Domanov
• 2010-03-21: Reserved by Dmitry Domanov, for 1000000<n<2000000
• 2009-01-06: Checked to n = 1000000, Gary Barnes, released
• 2009-01-01: Checked to n = 987000, Gary Barnes
• 2008-12-29: Found n = 978724, Gary Barnes
• 2008-12-26: Checked to n = 972000, Gary Barnes
• 2008-11-28: Checked to n = 960000, Gary Barnes
• 2008-11-14: Checked to n = 939000, Gary Barnes
• 2008-11-10: Checked to n = 600000, NPLB Drive 3, released
• 2008-10-31: Checked to n = 924000, Gary Barnes
• 2008-09-10: Checked to n = 901000, Gary Barnes
• 2008-09-03: Checked to n = 890000, Gary Barnes
• 2008-08-22: Checked to n = 858000, Gary Barnes
• 2008-08-13: Checked to n = 835000, Gary Barnes
• 2008-08-07: Checked to n = 825000, Gary Barnes
• 2008-07-24: Checked to n = 786000, Gary Barnes
• 2008-07-14: Checked to n = 750000, Gary Barnes
• 2008-07-04: Checked to n = 707000, Gary Barnes
• 2008-06-17: Checked to n = 635000, Gary Barnes
• 2008-06-01: Reserved by Gary Barnes, for 600000<n<1000000
• 2008-03-01: Reserved by NPLB Drive 3, for 260000<n<600000
• 2003-07-16: Found n = 177652, James S. Griffin
• 2003-07-14: Found n = 144768, James S. Griffin
• 2001-12-31: Found n = 115272, James S. Griffin
• 2001-07-23: Found n = 98226, Sander Hoogendoorn
• 2001-02-20: Found n = 90642, Kimmo Herranen
• 2001-01-20: Found n = 69568, Kimmo Herranen