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 , 2 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

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