Riesel primes of the form 933•2n-1

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

Current data

k , b : 933 , 2 Type : 3 Count : 31 Nash : 1701 Max n : 2,200,000 Date : 2024-07-30 Reserved : No Prime Left BehindNo Prime Left Behind/Reserved

10, 16, 31, 40, 52, 55, 66, 207, 208, 327, 351, 372, 375, 508, 759, 1516, 1590, 2487, 8172, 19776, 31336, 43120, 49975, 61156, 171760, 221568, 295786, 332466, 1078926, 1122372, 1365580

History

• 2023-01-21: Reserved by NPLB Drive 18, for 2000000<n<3000000
• 2023-01-21: Checked to n = 2000000, NPLB Drive 14, released
• 2014-10-30: Found n = 1365580, Lennart Vogel
• 2012-04-18: Found n = 1122372, James P. Burt
• 2012-03-17: Found n = 1078926, Max Dettweiler
• 2011-12-31: Reserved by NPLB Drive 14, for 1000000<n<=2000000
• 2011-07-11: Checked to n = 1000000, NPLB Drive 7, released
• 2008-12-22: Checked to n = 600000, NPLB Drive 1, released
• 2008-12-19: Reserved by NPLB Drive 7, for 600000<n<=1000000
• 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
• 2005-02-18: Found n = 221568, Peter Benson