Riesel primes of the form 12217•2n-1

Current data

k , b : 12217 , 2 Type : Low Count : 21 Nash : 650 Max n : 1,000,000 Date : 2020-04-23

21, 37, 61, 85, 709, 829, 1401, 1909, 2481, 4041, 5437, 8785, 17485, 30817, 57181, 69697, 72241, 78921, 357141, 455125, 525957

History

• 2020-04-23: Checked to n = 1000000, Norman D. Powell, released
• 2020-04-21: Checked to n = 800000, Norman D. Powell
• 2020-04-19: Checked to n = 600000, Norman D. Powell
• 2020-04-16: Checked to n = 400000, Norman D. Powell
• 2020-04-13: Reserved by Norman D. Powell
• 2013-10-16: Checked to n = 360000, Alexander Jones
• 2011-11-23: Checked to n = 20000, Thomas Ritschel
• 2008-05-05: Found n = 357141, Chris Chatfield