Riesel primes of the form 505•2n-1

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

Current data

k , b : 505 , {{{Rb}}} Count : 21 Nash : 852 Max n : 2,820,000 Date : 2024-03-09 Reserved : No Prime Left BehindNo Prime Left Behind/Reserved

1, 11, 31, 47, 241, 1363, 1681, 3277, 3527, 3799, 4297, 4801, 5071, 19127, 22609, 34621, 35083, 61249, 78679, 99671, 1165307

[[Category:Riesel {{{Rb}}}|#.....00505]][[Category:Riesel {{{Rb}}} Low-weight|#.....00505]]

History

• 2012-12-14: Found n = 1165307, Göran Schmidt
• 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