Riesel primes of the form 155•2n-1

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

Current data

k , b : 155 , 2 Count : 32 Nash : 1317 Max n : 2,800,000 Date : 2024-11-13 Reserved : No Prime Left BehindNo Prime Left Behind/Reserved

2, 8, 14, 16, 44, 46, 82, 172, 196, 254, 556, 806, 2828, 4462, 5558, 8086, 8216, 9862, 12026, 12842, 26054, 57044, 85364, 105098, 127262, 296822, 310312, 310622, 353384, 374288, 496604, 1207424

History

• 2024-05-16: Reserved by NPLB K300 Drive 1 for n > 2300000
• 2022-04-10: Checked to n = 2300000, RPS Megabit Drive 2
• 2021-03-21: Checked n = 1 - 1000000, Gary Barnes, double check, results included
• 2019-08-18: Checked to n = 2200000, RPS Megabit Drive 2
• 2011-07-12: Found n = 1207424, David Metcalfe, RPS Megabit Drive 2
• 2011-04-28: Reserved by RPS Megabit Drive 2 for n > 1000000
• 2009-07-30: Reserved by Borys Jaworski from n=1000000
• 2006-06-23: Checked to n = 1000000, Thomas Ritschel, released
• 2006-06-06: Checked to n = 900000, Thomas Ritschel
• 2006-05-05: Checked to n = 700000, Thomas Ritschel
• 2006-04-27: Checked to n = 560000, Thomas Ritschel
• 2006-03-23: Checked to n = 500000, Thomas Ritschel
• 2006-03-15: Found n = 296822, Thomas Ritschel
• 2006-03-06: Found n = 496604, Thomas Ritschel
• 2006-03-06: Found n = 374288, Thomas Ritschel
• 2006-03-06: Found n = 353384, Thomas Ritschel
• 2006-03-04: Found n = 310622, Thomas Ritschel
• 2006-03-04: Found n = 310312, Thomas Ritschel
• 2006-02-06: Reserved by Thomas Ritschel
• 2004-06-18: Checked to n = 250000, Thomas Ritschel, released
• 2004-05-26: Reserved by Thomas Ritschel