Riesel primes of the form 703•2n-1

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

Current data

k , b : 703 , 2 Count : 25 Nash : 1213 Max n : 2,200,000 Date : 2024-07-30 Reserved : No Prime Left BehindNo Prime Left Behind/Reserved

3, 7, 11, 47, 51, 107, 571, 2019, 2119, 3463, 4523, 6143, 6611, 9023, 14103, 19119, 25163, 31491, 109919, 147511, 170491, 227723, 569043, 1031219, 1494427

History

• 2023-01-21: Reserved by NPLB Drive 18, for 2000000<n<3000000
• 2023-01-21: Checked to n = 2000000, NPLB Drive 14, released
• 2018-01-22: Found n = 1494427, Max Dettweiler
• 2012-02-23: Found n = 1031219, Göran Schmidt
• 2011-12-31: Reserved by NPLB Drive 14, for 1000000<n<=2000000
• 2011-02-08: Checked to n = 1000000, NPLB Drive 6, released
• 2008-12-22: Checked to n = 600000, NPLB Drive 1, released
• 2008-12-19: Reserved by NPLB Drive 6, for 600000<n<=1000000
• 2008-11-23: Found n = 569043, Ian M. Gunn
• 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
• 2005-01-26: Found n = 227723, Steven Harvey
• 2003-09-02: Found n = 170491, Dennis Okon
• 2003-09-02: Found n = 147511, Dennis Okon
• 2002-03-10: Found n = 109919, Kimmo Herranen