Riesel primes of the form 347•2n-1

Reserved! This sequence is currently part of Multi Reservation 26: NPLB Drive 19.

Current data

k , b : 347 , 2 Count : 28 Nash : 1446 Max n : 3,100,000 Date : 2024-08-15 Reserved : No Prime Left BehindNo Prime Left Behind/Reserved

18, 24, 48, 158, 188, 242, 258, 336, 396, 800, 918, 1542, 1884, 3060, 3392, 5288, 6534, 28620, 36234, 44330, 69668, 88154, 118148, 144104, 330228, 1529964, 1861974, 2245598

History

• 2023-03-07: Reserved by NPLB Drive 19, for 3000000<n<4000000
• 2022-06-03: Checked to n = 3000000, NPLB Drive 15, released
• 2017-07-06: Found n = 2245598, Göran Schmidt
• 2014-12-29: Reserved by NPLB Drive 15, for n=2000000-3000000
• 2014-12-28: Checked to n = 2000000, NPLB Maxi Drive 1, released
• 2014-11-14: Found n = 1861974, Göran Schmidt
• 2014-08-20: Reserved by NPLB Maxi Drive 1, for 1610000<n<2000000
• 2013-12-08: Found n = 1529964, Stuart Mullage
• 2013-04-28: Reserved by NPLB Maxi Drive 1, for 1300000<n<2000000
• 2013-01-14: Reserved by NPLB Maxi Drive 1, for 1000000<n<1300000
• 2009-10-04: Checked to n = 1000000, Karsten Bonath, released
• 2009-09-01: Checked to n = 951000, Karsten Bonath
• 2009-08-20: Checked to n = 905000, Karsten Bonath
• 2009-08-11: Checked to n = 860000, Karsten Bonath
• 2009-07-25: Reserved by Karsten Bonath, for 800000<n<1000000
• 2009-06-18: Checked to n = 800000, Gary Barnes, released
• 2009-06-09: Checked to n = 767000, Gary Barnes
• 2009-06-02: Checked to n = 740000, Gary Barnes, reserved to n=800000
• 2009-05-28: Checked to n = 720000, Gary Barnes
• 2009-05-20: Reserved by Gary Barnes, for 700000<n<750000
• 2009-03-27: Checked to n = 700000, Gary Barnes, released
• 2009-03-22: Checked to n = 645000, Gary Barnes
• 2009-03-14: Reserved by Gary Barnes, for 600000<n<700000
• 2008-11-10: Checked to n = 600000, NPLB Drive 3, released
• 2008-03-01: Reserved by NPLB Drive 3, for 260000<n<600000
• 2002-07-11: Found n = 118148, Kimmo Herranen
• 2001-02-27: Found n = 88154, Kimmo Herranen
• 2001-02-27: Found n = 69668, Kimmo Herranen