Riesel primes of the form 429•2n-1

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

Current data

k , b : 429 , 2 Type : 3 Count : 44 Nash : 2178 Max n : 2,820,000 Date : 2024-03-09 Reserved : No Prime Left BehindNo Prime Left Behind/Reserved

1, 4, 9, 13, 16, 25, 28, 37, 67, 76, 79, 100, 139, 249, 355, 405, 409, 433, 1035, 1063, 2656, 2776, 2860, 2988, 5535, 8685, 10989, 15040, 26335, 30376, 37708, 41413, 122707, 499671, 542500, 686860, 696361, 733315, 1205440, 1428961, 1791163, 1856373, 1894947, 2478139

History

• 2023-07-03: Found n = 2478139, Florian Piesker
• 2022-08-10: Checked to n = 2000000, NPLB Drive 13, released
• 2022-08-09: Reserved by NPLB Drive 17, for 2000000<n<3000000
• 2022-06-09: Found n = 1894947, Florian Piesker
• 2022-05-22: Found n = 1856373, Florian Piesker
• 2022-04-24: Found n = 1791163, Florian Piesker
• 2015-10-27: Found n = 1428961, Timothy Sorbera
• 2013-04-24: Found n = 1205440, Gary Barnes
• 2011-08-04: Reserved by NPLB Drive 13, for 1000000<n<2000000
• 2010-11-11: Checked to n = 1000000, NPLB Drive 5
• 2009-10-30: Found n = 733315, Gary Barnes
• 2009-06-17: Found n = 696361, Vaughan Davies
• 2009-05-21: Found n = 686860, David James
• 2008-12-22: Checked to n = 600000, NPLB Drive 1
• 2008-12-19: Reserved by NPLB Drive 5, for 600000<n<1000000
• 2008-11-13: Found n = 542500, Timothy Sorbera
• 2008-07-12: Found n = 499671, Bruce E. Slade
• 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
• 2003-06-10: Found n = 122707, Steven Harvey
• 1998-11-06: Found n = 41413, Christ van Willegen
• 1998-11-05: Found n = 37708, Christ van Willegen