Riesel primes of the form 493•2n-1

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

Current data

k , b : 493 , {{{Rb}}} Count : 31 Nash : 1394 Max n : 2,820,000 Date : 2024-03-09 Reserved : No Prime Left BehindNo Prime Left Behind/Reserved

3, 7, 19, 39, 71, 111, 223, 1027, 1319, 1387, 1495, 1771, 2139, 3487, 3711, 3795, 6055, 7503, 8839, 13435, 21907, 53827, 60483, 60863, 69847, 79051, 90987, 139843, 160027, 224899, 669151

[[Category:Riesel {{{Rb}}}|#.....00493]]

History

• 2011-08-04: Reserved by NPLB Drive 13, for 1000000<n<2000000
• 2010-11-11: Checked to n = 1000000, NPLB Drive 5
• 2009-05-03: Found n = 669151, David Park
• 2008-12-22: Checked to n = 600000, NPLB Drive 1
• 2008-12-19: Reserved by NPLB Drive 5, for 600000<n<1000000
• 2008-03-25: Checked to n = 333200, NPLB Drive 2
• 2008-01-22: Reserved by NPLB Drive 2, for 260000<=n<=333200
• 2008-01-21: Reserved by NPLB Drive 1, for 333201<=n<=600000
• 2004-11-12: Found n = 224899, Steven Harvey
• 2001-05-29: Found n = 90987, Kimmo Herranen
• 2001-05-28: Found n = 79051, Kimmo Herranen
• 2001-05-28: Found n = 69847, Kimmo Herranen