Riesel primes of the form 287•2n-1

Reserved! This sequence is currently part of Multi Reservation 7: NPLB K300 Drive 1.

Current data

k , b : 287 , 2 Count : 27 Nash : 1307 Max n : 2,800,000 Date : 2024-11-13 Reserved : No Prime Left BehindNo Prime Left Behind/Reserved

4, 6, 8, 14, 16, 18, 28, 64, 114, 248, 644, 978, 1214, 1928, 1954, 3604, 4234, 6964, 7466, 12316, 14464, 35106, 92986, 525378, 1226144, 2054534, 2197108

History

• 2024-05-07: Found n = 2197108, Gary Barnes, NPLB K300 Drive 1
• 2024-04-25: Found n = 2054534, Gary Barnes, NPLB K300 Drive 1
• 2024-04-23: Reserved by NPLB K300 Drive 1 for n > 2000000
• 2021-03-21: Checked n = 1 - 1000000, Gary Barnes, double check, results included
• 2013-05-21: Checked to n = 2000000, Shashank Sharma
• 2013-02-05: Checked to n = 1800000, Shashank Sharma
• 2012-11-17: Checked to n = 1600000, Shashank Sharma
• 2011-02-01: Checked to n = 1400000, RPS Drive 6, released
• 2010-06-12: Found n = 1226144, Dmitry Domanov, RPS Drive 6
• 2008-06-22: Reserved by RPS Drive 6, for n > 600000
• 2006-12-16: Checked to n = 600000, RPS Drive 4, released
• 2006-10-04: Found n = 525378, Predrag Minovic, RPS Drive 4
• 2006-07-28: Reserved by RPS Drive 4, for n = 260000 - 600000