Riesel primes of the form 439•2n-1

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

Current data

k , b : 439 , 2 Count : 40 Nash : 1651 Max n : 2,820,000 Date : 2024-03-09 Reserved : No Prime Left BehindNo Prime Left Behind/Reserved

1, 3, 13, 29, 37, 47, 91, 123, 163, 187, 193, 453, 519, 523, 533, 743, 1221, 2103, 3917, 4093, 4369, 9993, 18613, 40333, 49487, 58813, 74773, 81541, 95779, 124171, 127747, 150103, 191181, 203023, 240411, 456023, 572313, 1641403, 1824841, 1872789

History

• 2022-08-10: Checked to n = 2000000, NPLB Drive 13, released
• 2022-08-09: Reserved by NPLB Drive 17, for 2000000<n<3000000
• 2022-05-31: Found n = 1872789, Florian Piesker
• 2022-05-08: Found n = 1824841, William Byerly
• 2021-10-24: Found n = 1641403, Dmitry Domanov
• 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
• 2008-11-28: Found n = 572313, Ian M. Gunn
• 2008-09-28: Found n = 456023, Steven Tjung
• 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
• 2004-10-14: Found n = 240411, Peter O'braian
• 2004-10-12: Found n = 203023, Peter O'braian
• 2002-12-02: Found n = 150103, Dennis Okon
• 2002-12-02: Found n = 127747, Dennis Okon
• 2002-12-02: Found n = 124171, Dennis Okon
• 2002-01-08: Found n = 95779, Kimmo Herranen