Proth primes of the form 3375•2n+1

Current data

k , b : 3375 , 2 Type : 315 Count : 48 Nash : 2702 Max n : 3,486,000 Date : 2023-10-21

4, 7, 10, 22, 26, 47, 62, 65, 91, 124, 131, 172, 226, 391, 395, 796, 1406, 1972, 2275, 2300, 2891, 8254, 9614, 10367, 13490, 20467, 25360, 25415, 37306, 56315, 83585, 83897, 126874, 132230, 328394, 346790, 350816, 448192, 480146, 542746, 588257, 689495, 757070, 837107, 1291400, 1350052, 2314297, 3473210

History

• 2023-10-21: Checked n = 3322000-3486000, PrimeGrid Proth Mega Prime Search
• 2023-06-12: Found n = 3473210, Wes Hewitt, PrimeGrid Proth Mega Prime Search
• 2019-09-24: Checked to n = 3322000, PrimeGrid Fermat Divisor Search
• 2019-09-09: Found n = 2314297, Honza Cholt, PrimeGrid Fermat Divisor Search
• 2019-09-06: Reserved by PrimeGrid Fermat Divisor Search from n=1550000
• ?: Checked to n = 1550000, PrimeGrid Proth Prime Search Extended
• 2015-08-08: Found n = 1350052, Ales Martinik, PrimeGrid Proth Prime Search Extended
• 2014-08-21: Found n = 1291400, Robert Fiedler, PrimeGrid Proth Prime Search Extended
• 2012-04-22: Found n = 837107, John S Morris III, PrimeGrid Proth Prime Search Extended
• 2011-12-13: Found n = 757070, Kingsley Jarrett, PrimeGrid Proth Prime Search Extended
• 2011-09-03: Found n = 689495, Vadim Zorya, PrimeGrid Proth Prime Search Extended
• 2010-12-07: Found n = 588257, Peter Benson, PrimeGrid Proth Prime Search Extended
• 2010-08-13: Found n = 542746, Fred Richard, PrimeGrid Proth Prime Search Extended
• 2009-11-22: Found n = 480146, Jason Adams, PrimeGrid Proth Prime Search Extended
• 2009-01-07: Found n = 350816, Lennart Vogel, PrimeGrid Proth Prime Search Extended
• 1999-03-07: Found n = 37306, Tadashi Taura
• 1996-05-01: Found n = 8254, Patrick Demichel