Riesel primes of the form 915•2n-1

Reserved! This sequence is currently part of Multi Reservation 3: NPLB Drive 18.

Current data

k , b : 915 , 2 Type : 315 Count : 68 Nash : 3186 Max n : 2,200,000 Date : 2024-07-30 Reserved : No Prime Left BehindNo Prime Left Behind/Reserved

2, 4, 7, 8, 13, 22, 25, 43, 44, 48, 53, 55, 70, 83, 88, 173, 274, 283, 288, 452, 457, 463, 493, 514, 648, 682, 845, 1000, 1513, 1795, 2162, 2483, 3190, 3340, 3973, 4388, 6105, 6707, 11455, 12862, 13244, 15517, 15797, 20293, 22524, 24492, 34113, 40940, 53788, 58918, 72612, 100673, 106314, 127513, 130250, 166277, 214752, 229573, 247897, 311850, 328673, 427390, 445192, 652353, 868878, 947117, 1351847, 1779982

History

• 2022-08-06: Found n = 1779982, Gary Barnes
• 2014-10-06: Found n = 1351847, Lennart Vogel
• 2011-12-31: Reserved by NPLB Drive 14, for 1000000<n<=2000000
• 2011-07-11: Checked to n = 1000000, NPLB Drive 7, released
• 2011-05-10: Found n = 947117, Chris Chatfield
• 2011-04-08: Found n = 868878, Chris Chatfield
• 2008-12-22: Checked to n = 600000, NPLB Drive 1, released
• 2008-12-19: Reserved by NPLB Drive 7, for 600000<n<=1000000
• 2008-06-04: Found n = 652353, David Metcalfe
• 2008-05-14: Found n = 445192, Adam Sutton
• 2008-05-07: Found n = 427390, Gary Barnes
• 2008-03-25: Checked to n = 333200, NPLB Drive 2, released
• 2008-01-22: Reserved by NPLB Drive 2, for 260000<=n<=333200
• 2008-01-21: Reserved by NPLB Drive 1, for 333201<=n<=600000
• 2004-06-20: Found n = 247897, James S. Griffin
• 2004-06-09: Found n = 229573, James S. Griffin
• 2004-05-29: Found n = 214752, James S. Griffin
• 2004-05-10: Found n = 166277, James S. Griffin
• 2003-08-04: Found n = 127513, James S. Griffin
• 2003-01-06: Found n = 106314, Steven Harvey
• 2003-01-06: Found n = 100673, Steven Harvey
• 1998-03-24: Found n = 11455, Ray Ballinger