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 : 28 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

History

• 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