Riesel primes of the form 787•2n-1

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

Current data

k , b : 787 , {{{Rb}}} Count : 12 Nash : 520 Max n : 2,200,000 Date : 2024-07-30 Reserved : No Prime Left BehindNo Prime Left Behind/Reserved

5, 9, 65, 2109, 3809, 4649, 15273, 15869, 22329, 57513, 88833, 190109

[[Category:Riesel {{{Rb}}}|#.....00787]][[Category:Riesel {{{Rb}}} Low-weight|#.....00787]]

History

• 2011-12-31: Reserved by NPLB Drive 14, for 1000000<n<=2000000
• 2011-02-08: Checked to n = 1000000, NPLB Drive 6, released
• 2008-12-22: Checked to n = 600000, NPLB Drive 1, released
• 2008-12-19: Reserved by NPLB Drive 6, 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
• 2005-01-04: Found n = 190109, Steven Harvey
• 2001-12-07: Found n = 88833, Torbjörn Alm