Riesel primes of the form 557•2n-1

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

Current data

k , b : 557 , 2 Count : 30 Nash : 1448 Max n : 2,820,000 Date : 2024-03-09 Reserved : No Prime Left BehindNo Prime Left Behind/Reserved

8, 14, 44, 60, 200, 224, 270, 350, 1110, 4272, 4860, 5798, 6876, 8628, 25062, 41150, 51236, 51660, 51870, 75668, 153206, 173940, 283134, 303360, 305408, 334422, 1571700, 1575504, 2624952, 2757276

History

• 2023-12-17: Found n = 2757276, Florian Piesker
• 2023-10-04: Found n = 2624952, 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
• 2018-10-02: Found n = 1575504, Dmitry Domanov
• 2018-09-03: Found n = 1571700, 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
• 2008-03-25: Checked to n = 333200, NPLB Drive 2
• 2008-01-23: Found n = 334422, Adam Sutton
• 2008-01-22: Reserved by NPLB Drive 2, for 260000<=n<=333200
• 2008-01-21: Reserved by NPLB Drive 1, for 333201<=n<=600000
• 2004-08-30: Found n = 173940, Steven Harvey