Riesel primes of the form 307•2n-1

Reserved! This sequence is currently part of Multi Reservation 27: NPLB Drive High-n.

Current data

k , b : 307 , 2 Type : Low Count : 9 Nash : 665 Max n : 4,800,000 Date : 2023-11-20 Reserved : No Prime Left BehindNo Prime Left Behind/Reserved

1, 13, 17, 29, 53, 361, 34117, 408953, 2137553

History

• 2022-06-03: Reserved by NPLB Drive High-n, for 3000000<n<5000000
• 2022-06-03: Checked to n = 3000000, NPLB Drive 15, released
• 2015-04-20: Found n = 2137553, Stuart Mullage
• 2014-12-29: Reserved by NPLB Drive 15, for n=2000000-3000000
• 2012-01-05: Checked to n = 200000, Lennart Vogel
• 2011-12-31: Reserved by Lennart Vogel
• 2010-05-19: Checked to n = 1100000, Vincent Gautier, released, results included
• 2010-04-26: Reserved by Vincent Gautier, for 1000000<n<1100000
• 2008-11-10: Checked to n = 600000, NPLB Drive 3, released
• 2008-08-30: Checked n = 900000-1000000, Carlos Eduardo Pinho, results not available anymore
• 2008-08-19: Checked n = 800000-850000, Carlos Eduardo Pinho, results included
• 2008-08-16: Checked to n = 800000, Carlos Eduardo Pinho, results included
• 2008-07-20: Checked n = 850000-900000, Carlos Eduardo Pinho, results included
• 2008-07-20: Checked to n = 700000, Carlos Eduardo Pinho, results included
• 2008-07-18: Checked to n = 671000, Carlos Eduardo Pinho, also n=850000-887000
• 2008-06-17: Checked to n = 642000, Carlos Eduardo Pinho
• 2008-05-09: Reserved by Carlos Eduardo Pinho, for 600000<n<1000000
• 2008-03-01: Reserved by NPLB Drive 3, for 260000<n<600000
• 2007-07-31: Found n = 408953, James S. Griffin