Riesel primes of the form 985•2n-1

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

Current data

k , b : 985 , {{{Rb}}} Count : 41 Nash : 2132 Max n : 2,200,000 Date : 2024-07-30 Reserved : No Prime Left BehindNo Prime Left Behind/Reserved

3, 7, 13, 27, 39, 49, 79, 115, 239, 247, 255, 293, 297, 349, 473, 515, 1005, 1863, 2087, 2687, 4477, 4507, 5127, 7969, 11143, 12209, 12407, 15259, 16425, 17983, 19699, 24139, 30395, 39717, 81783, 90927, 149879, 211217, 234203, 319043, 622033

[[Category:Riesel {{{Rb}}}|#.....00985]]

History

• 2011-12-31: Reserved by NPLB Drive 14, for 1000000<n<=2000000
• 2011-07-11: Checked to n = 1000000, NPLB Drive 7, released
• 2009-01-27: Found n = 622033, Ian M. Gunn
• 2008-12-22: Checked to n = 600000, NPLB Drive 1, released
• 2008-12-19: Reserved by NPLB Drive 7, for 600000<n<=1000000
• 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
• 2004-11-04: Found n = 234203, Marcin Lipinski
• 2004-10-26: Found n = 211217, Marcin Lipinski