Riesel primes of the form 539•2n-1

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

Current data

k , b : 539 , 2 Count : 31 Nash : 1581 Max n : 2,820,000 Date : 2024-03-09 Reserved : No Prime Left BehindNo Prime Left Behind/Reserved

4, 8, 16, 24, 36, 40, 92, 136, 140, 340, 384, 492, 704, 1248, 1356, 3348, 4496, 6720, 9412, 10936, 13896, 18532, 20896, 21096, 41056, 53116, 102232, 343024, 602564, 1953060, 2421556

History

• 2023-05-30: Found n = 2421556, Florian Piesker
• 2022-08-10: Checked to n = 2000000, NPLB Drive 13, released
• 2022-08-09: Reserved by NPLB Drive 17, for 2000000<n<3000000
• 2022-07-17: Found n = 1953060, Florian Piesker
• 2011-08-04: Reserved by NPLB Drive 13, for 1000000<n<2000000
• 2010-11-11: Checked to n = 1000000, NPLB Drive 5
• 2008-12-23: Found n = 602564, Gary Barnes
• 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
• 2008-02-02: Found n = 343024, Carlos Eduardo Pinho
• 2008-01-22: Reserved by NPLB Drive 2, for 260000<=n<=333200
• 2008-01-21: Reserved by NPLB Drive 1, for 333201<=n<=600000
• 2002-10: Found n = 102232, Steven Harvey