Riesel primes of the form 515•2n-1

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

Current data

k , b : 515 , {{{Rb}}} Count : 29 Nash : 1261 Max n : 2,820,000 Date : 2024-03-09 Reserved : No Prime Left BehindNo Prime Left Behind/Reserved

8, 20, 36, 38, 56, 230, 266, 410, 540, 566, 668, 986, 1496, 2156, 8450, 12038, 23966, 36068, 42098, 48596, 68898, 94040, 101438, 137870, 181460, 381128, 422822, 680196, 1398708

[[Category:Riesel {{{Rb}}}|#.....00515]]

History

• 2015-02-09: Found n = 1398708, Timothy Sorbera
• 2011-08-04: Reserved by NPLB Drive 13, for 1000000<n<2000000
• 2010-11-11: Checked to n = 1000000, NPLB Drive 5
• 2009-05-11: Found n = 680196, David James
• 2008-12-22: Checked to n = 600000, NPLB Drive 1
• 2008-12-19: Reserved by NPLB Drive 5, for 600000<n<1000000
• 2008-05-04: Found n = 422822, Lennart Vogel
• 2008-03-25: Checked to n = 333200, NPLB Drive 2
• 2008-03-16: Found n = 381128, James P. Burt
• 2008-01-22: Reserved by NPLB Drive 2, for 260000<=n<=333200
• 2008-01-21: Reserved by NPLB Drive 1, for 333201<=n<=600000
• 2004-08-24: Found n = 181460, Steven Harvey
• 2002-02-05: Found n = 101438, Kimmo Herranen
• 2002-02-05: Found n = 94040, Kimmo Herranen