Riesel primes of the form 23805•2n-1

Reserved! This sequence is currently reserved by: Alexander Jones

Current data

k , b : 23805 , {{{Rb}}} Count : 94 Nash : 4694 Max n : 375,000 Date : 2021-06-01 Reserved : Alexander JonesAlexander Jones/Reserved

1, 2, 4, 9, 13, 25, 27, 28, 31, 36, 57, 58, 65, 72, 74, 123, 135, 151, 161, 162, 184, 196, 241, 271, 354, 357, 576, 724, 747, 765, 849, 871, 949, 1028, 1033, 1165, 1177, 1388, 1576, 1737, 2193, 2517, 2842, 3109, 3497, 3748, 3858, 4841, 5209, 5324, 5773, 7678, 8953, 10257, 10867, 11331, 14968, 15607, 16921, 18195, 24305, 25252, 30219, 30622, 36336, 37722, 39223, 44779, 48656, 55785, 57097, 62863, 70934, 80482, 84943, 106791, 113775, 118994, 119496, 126457, 126653, 131762, 135568, 270312, 342577, 365993, 451349, 500218, 521958, 527683, 565351, 572827, 620974, 916969

[[Category:Riesel {{{Rb}}}|#.....23805]]

History

• 2021-06-01: Checked to n = 375000, Alexander Jones
• 2021-01-13: Checked to n = 350000, Alexander Jones
• 2020-10-01: Checked to n = 325000, Alexander Jones
• 2020-06-17: Checked to n = 300000, Alexander Jones
• 2020-03-17: Reserved by Alexander Jones
• 2011-11-23: Checked to n = 1007, Gary Barnes
• 2011-10-03: Checked n = 400000  -  1000000, RPS Drive 9, released
• 2011-02-20: Found n = 916969, Peter Benson
• 2010-03-09: Found n = 620974, David Metcalfe
• 2009-11-28: Found n = 572827, Predrag Minovic
• 2009-11-07: Found n = 565351, Predrag Minovic
• 2009-08-13: Found n = 527683, David Metcalfe
• 2009-07-31: Found n = 521958, Thomas Ritschel
• 2009-07-08: Found n = 500218, David Metcalfe
• 2009-05-27: Found n = 451349, Predrag Minovic
• 2009-05-12: Reserved by RPS Drive 9