Proth primes of the form 1105•2n+1

Current data

k , b : 1105 , 2 Count : 41 Nash : 2102 Max n : 3,640,000 Date : 2022-07-31

2, 4, 8, 20, 28, 34, 40, 52, 62, 128, 136, 148, 220, 538, 790, 1478, 3118, 3184, 3386, 4376, 5986, 9170, 11584, 11870, 17446, 30458, 38954, 58556, 130684, 263320, 281308, 394832, 404584, 622142, 636002, 1065418, 1278476, 1314586, 2171956, 2213846, 3069884

History

• 2022-07-31: Checked to n = 3322000, PrimeGrid Proth Prime Search
• 2021-07-22: Found n = 3069884, Toshiya Satoh, PrimeGrid Proth Prime Search
• 2019-07: Checked n = 3322000 - 3640000, PrimeGrid Proth Mega Prime Search
• 2015-12-13: Found n = 2213846, Paul Medcalf, PrimeGrid Proth Prime Search
• 2014-08-06: Found n = 2171956, Randall Scalise, PrimeGrid Proth Prime Search
• 2012-02-10: Found n = 1314586, Daniel Hagerty, PrimeGrid Proth Prime Search
• 2011-11-14: Found n = 1278476, Giles Averay-Jones, PrimeGrid Proth Prime Search
• 2011-09-20: Found n = 1065418, Mark Wilcoxen, PrimeGrid Proth Prime Search
• 2009-04-26: Found n = 636002, Nathan Russell, PrimeGrid Proth Prime Search
• 2009-04-05: Found n = 622142, Adriano Vajro, PrimeGrid Proth Prime Search
• 2007-06-06: Found n = 404584, Peter Benson
• 2007-04-18: Found n = 394832, Peter Benson
• 2005-12-30: Found n = 281308, Peter Benson
• 2005-10-05: Found n = 263320, Peter Benson
• 2001-07-21: Found n = 130684, Jim Fougeron
• 1999-03-13: Found n = 30458, Tadashi Taura
• 1996-07: Found n = 17446, Patrick Demichel
• 1993: Found n = 9170, Harvey Dubner