Riesel primes of the form 971•2n-1

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

Current data

k , b : 971 , {{{Rb}}} Count : 25 Nash : 1203 Max n : 2,200,000 Date : 2024-07-30 Reserved : No Prime Left BehindNo Prime Left Behind/Reserved

6, 10, 18, 26, 38, 58, 70, 106, 126, 138, 486, 810, 914, 1266, 1338, 2558, 4798, 7974, 13826, 41730, 53466, 222610, 258914, 290298, 294958

[[Category:Riesel {{{Rb}}}|#.....00971]]

History

• 2011-12-31: Reserved by NPLB Drive 14, for 1000000<n<=2000000
• 2011-07-11: Checked to n = 1000000, NPLB Drive 7, released
• 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
• 2005-01-22: Found n = 258914, Peter Benson
• 2005-01-18: Found n = 222610, Peter Benson