Riesel primes of the form 565•2n-1

Reserved! This sequence is currently part of Multi Reservation 8: NPLB Drive 17.

Current data

k , b : 565 , 2 Count : 44 Nash : 1788 Max n : 2,820,000 Date : 2024-03-09 Reserved : No Prime Left BehindNo Prime Left Behind/Reserved

1, 3, 13, 21, 25, 41, 49, 51, 63, 89, 97, 157, 185, 277, 313, 327, 707, 865, 1237, 1393, 1585, 1813, 2173, 2481, 3801, 5373, 12437, 16959, 31393, 33507, 35829, 36737, 36903, 62513, 64007, 76713, 90213, 138963, 247067, 324789, 389013, 530221, 1148579, 1269153

History

• 2022-08-10: Checked to n = 2000000, NPLB Drive 13, released
• 2022-08-09: Reserved by NPLB Drive 17, for 2000000<n<3000000
• 2013-07-22: Found n = 1269153, Gary Barnes
• 2012-09-24: Found n = 1148579, Lennart Vogel
• 2011-08-04: Reserved by NPLB Drive 13, for 1000000<n<2000000
• 2010-11-11: Checked to n = 1000000, NPLB Drive 5
• 2008-12-22: Checked to n = 600000, NPLB Drive 1
• 2008-12-19: Reserved by NPLB Drive 5, for 600000<n<1000000
• 2008-08-17: Found n = 530221, Timothy Sorbera
• 2008-03-25: Checked to n = 333200, NPLB Drive 2
• 2008-03-19: Found n = 389013, James P. Burt
• 2008-01-22: Reserved by NPLB Drive 2, for 260000<=n<=333200
• 2008-01-21: Reserved by NPLB Drive 1, for 333201<=n<=600000
• 2005-06-11: Found n = 247067, Jun Tajima