Riesel primes of the form 227•2n-1

Reserved! This sequence is currently part of Multi Reservation 6: [[]].

Current data

k , b : 227 , 2 Count : 32 Nash : 2550 Max n : Date :

2, 4, 8, 12, 14, 26, 32, 80, 124, 230, 284, 562, 866, 1830, 2630, 3122, 3428, 6278, 9900, 19888, 20092, 22706, 29088, 31412, 44402, 47914, 53120, 102330, 135164, 299306, 345918, 1170724

[[Category:|#.....00227]]

History

• 2021-03-21: Checked n = 1-1000000, Gary Barnes, double check, results included
• 2014-05-30: Reserved by RPS 3rd Megabit Drive for n > 1400000
• 2010-12-06: Checked to n = 1400000, David Metcalfe, released
• 2010-08-01: Checked to n = 1300000, David Metcalfe
• 2010-06-30: Checked to n = 1250000, David Metcalfe
• 2010-05-31: Found n = 1170724, David Metcalfe
• 2010-04-30: Checked to n = 1150000, David Metcalfe
• 2009-03-14: Checked to n = 1150000, David Metcalfe
• 2008-10-22: Checked to n = 1000000, NPLB Drive 4, released
• 2008-10-21: Checked to n = 1000000, David Metcalfe
• 2008-09-11: Reserved by David Metcalfe
• 2008-09-09: Reserved by NPLB Drive 4
• 2006-08-13: Checked to n = 600000, RPS Drive 2, released
• 2006-04-14: Found n = 345918, Larry Soule, RPS Drive 2
• 2006-04-03: Found n = 299306, David Metcalfe, RPS Drive 2
• 2006-03-17: Reserved by RPS Drive 2, for n = 210000 - 600000
• 2004-12-24: Checked n = 200000-210000, Steven Harvey
• 2000-05-05: Found n = 44402, Phil Carmody