Riesel primes of the form 275•2n-1

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

Current data

k , b : 275 , 2 Count : 28 Nash : 1581 Max n : 2,800,000 Date : 2024-11-13 Reserved : No Prime Left BehindNo Prime Left Behind/Reserved

6, 12, 16, 22, 34, 40, 72, 198, 220, 348, 376, 552, 594, 814, 972, 3168, 3702, 3834, 4642, 5116, 9720, 20434, 53692, 123678, 147802, 204516, 398928, 1846390

History

• 2024-05-05: Reserved by NPLB K300 Drive 1 for n > 2200000
• 2022-03-09: Checked to n = 2222000, RPS Megabit Drive 3
• 2021-03-21: Checked n = 1 - 1000000, Gary Barnes, double check, results included
• 2014-07-06: Found n = 1846390, Serge Batalov, RPS Megabit Drive 3
• 2014-06-03: Reserved by RPS Megabit Drive 3 for n > 1400000
• 2011-02-01: Checked to n = 1400000, RPS Drive 6, released
• 2008-06-22: Reserved by RPS Drive 6, for n > 600000
• 2006-12-16: Checked to n = 600000, RPS Drive 4, released
• 2006-08-21: Found n = 398928, Thomas Ritschel, RPS Drive 4
• 2006-07-28: Reserved by RPS Drive 4, for n = 260000 - 600000
• 2005-04-09: Found n = 204516, James S. Griffin
• 2004-02-04: Found n = 147802, Steven Harvey
• 2003-03-06: Found n = 123678, Andrew J. Rupinski