Proth primes of the form 699•2n+1

Current data

k , b : 699 , 2 Type : 3 Count : 49 Nash : 1894 Max n : 4,000,000 Date : 2023-04-30

1, 2, 5, 10, 13, 31, 38, 41, 85, 119, 125, 199, 202, 218, 263, 295, 311, 470, 674, 782, 1265, 1270, 2231, 2377, 7631, 7822, 13583, 14671, 22303, 46543, 61922, 63913, 75002, 142423, 185770, 420743, 431402, 467839, 570581, 877511, 907870, 1143143, 1200343, 1535678, 1674293, 2175031, 3023263, 3487253, 3974045

History

• 2023-04-30: Checked to n = 4000000, PrimeGrid Proth Prime Search
• 2023-03-12: Found n = 3974045, Howard Shi, PrimeGrid Proth Prime Search
• 2019-07: Checked n = 3322000 - 3640000, PrimeGrid Proth Mega Prime Search
• 2018-02-27: Found n = 3487253, James Scott Brown, PrimeGrid Proth Mega Prime Search
• 2014-04-24: Found n = 2175031, Paulo Silva, PrimeGrid Proth Prime Search
• 2012-12-18: Found n = 1674293, Toshiya Satoh, PrimeGrid Proth Prime Search
• 2012-11-09: Found n = 1535678, Mike Parker, PrimeGrid Proth Prime Search
• 2012-05-01: Found n = 3023263, Thurmond Harvey, PrimeGrid Proth Prime Search
• 2011-11-13: Found n = 1200343, Jan Koval, PrimeGrid Proth Prime Search
• 2011-10-07: Found n = 1143143, Yusup Khadjiyev, PrimeGrid Proth Prime Search
• 2011-05-05: Found n = 877511, Ossi Mauno, PrimeGrid Proth Prime Search
• 2010-01-25: Found n = 907870, Rüdiger K. Eckhard
• 2009-03-10: Found n = 570581, Simon Yakovlev, PrimeGrid Proth Prime Search
• 2008-12-29: Found n = 467839, Paul Steffener, PrimeGrid Proth Prime Search
• 2007-01-09: Found n = 431402, Rüdiger K. Eckhard
• 2006-11-27: Found n = 420743, Rüdiger K. Eckhard
• 2000-07-07: Found n = 46543, Thom Adams
• 1998-02-27: Found n = 14671, Ray Ballinger
• 1998-02-15: Found n = 13583, Ray Ballinger
• 1996: Found n = 22303, Patrick Demichel
• 1993: Found n = 7822, Harvey Dubner
• 1993: Found n = 7631, Harvey Dubner