Riesel primes of the form 303•2n-1

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

Current data

k , b : 303 , 2 Type : 3 Count : 32 Nash : 1488 Max n : 2,800,000 Date : 2024-11-13 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

History

• 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