Riesel primes of the form 591•2n-1

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

Current data

k , b : 591 , 2 Type : 3 Count : 34 Nash : 1480 Max n : 2,820,000 Date : 2024-03-09 Reserved : No Prime Left BehindNo Prime Left Behind/Reserved

1, 5, 15, 70, 83, 243, 281, 446, 553, 1670, 2062, 2211, 2981, 4453, 5422, 6725, 9213, 9875, 12398, 14366, 17283, 65021, 66085, 80631, 103053, 129421, 167081, 394441, 437973, 530223, 1458622, 1611590, 1820118, 2190433

History

• 2022-12-08: Found n = 2190433, 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
• 2022-05-06: Found n = 1820118, Florian Piesker
• 2021-06-22: Found n = 1611590, Göran Schmidt
• 2017-05-07: Found n = 1458622, Timothy Sorbera
• 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
• 2008-08-18: Found n = 530223, Timothy Sorbera
• 2008-05-18: Found n = 437973, Bruce E. Slade
• 2008-03-28: Found n = 394441, Gary Barnes
• 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
• 2004-06-16: Found n = 167081, Steven Harvey
• 2003-07-15: Found n = 129421, Steven Harvey
• 2002-10: Found n = 103053, Steven Harvey