Riesel primes of the form 925•2n-1

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

Current data

k , b : 925 , {{{Rb}}} Count : 17 Nash : 986 Max n : 2,200,000 Date : 2024-07-30 Reserved : No Prime Left BehindNo Prime Left Behind/Reserved

5, 7, 53, 77, 91, 101, 185, 509, 691, 2419, 3607, 6257, 7361, 9475, 35521, 824371, 1155857

[[Category:Riesel {{{Rb}}}|#.....00925]][[Category:Riesel {{{Rb}}} Low-weight|#.....00925]]

History

• 2012-04-24: Found n = 1155857, Lennart Vogel
• 2011-12-31: Reserved by NPLB Drive 14, for 1000000<n<=2000000
• 2011-07-11: Checked to n = 1000000, NPLB Drive 7, released
• 2011-03-27: Found n = 824371, Chris Chatfield
• 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