Riesel primes of the form 431•2n-1

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

Current data

k , b : 431 , {{{Rb}}} Count : Attention! Parameter RCount=12 not given! Nash : 804 Max n : 2,820,000 Date : 2024-03-09 Reserved : No Prime Left BehindNo Prime Left Behind/Reserved

2, 6, 54, 114, 170, 674, 1334, 1542, 4854, 63498, 218810, 239882

[[Category:Riesel {{{Rb}}}|#.....00431]][[Category:Riesel {{{Rb}}} Low-weight|#.....00431]]

History

• 2011-08-04: Reserved by NPLB Drive 13, for 1000000<n<2000000
• 2010-11-11: Checked to n = 1000000, NPLB Drive 5
• 2008-12-22: Checked to n = 600000, NPLB Drive 1
• 2008-12-19: Reserved by NPLB Drive 5, for 600000<n<1000000
• 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
• 2001-12-31: Found n = 239882, James S. Griffin
• 2001-12-31: Found n = 218810, James S. Griffin