Proth primes of the form 791•2n+1

Current data

k , b : 791 , 2 Count : 37 Nash : 1586 Max n : 3,640,000 Date : 2022-07-31

1, 3, 27, 31, 49, 81, 91, 105, 193, 243, 483, 577, 715, 889, 937, 2641, 4467, 6289, 10239, 17617, 22825, 29049, 29767, 31071, 56847, 65775, 82865, 116833, 265627, 272353, 286121, 630135, 752311, 1135983, 1885961, 3055695, 3323995

History

• 2022-07-31: Checked to n = 3322000, PrimeGrid Proth Prime Search
• 2021-06-11: Found n = 3055695, Rudi Tapper, PrimeGrid Proth Prime Search
• 2019-07: Checked n = 3322000 - 3640000, PrimeGrid Proth Mega Prime Search
• 2016-10-24: Found n = 3323995, Randall Scalise, PrimeGrid Proth Mega Prime Search, (Official announcement)
• 2013-10-01: Found n = 1885961, Bob Goellner, PrimeGrid Proth Prime Search
• 2011-10-07: Found n = 1135983, John Williams, PrimeGrid Proth Prime Search
• 2010-02-17: Found n = 752311, Arnaud Lemarotel, PrimeGrid Proth Prime Search
• 2009-04-10: Found n = 630135, Sebastian Schwarz, PrimeGrid Proth Prime Search
• 1998-07-24: Found n = 31071, Tadashi Taura
• 1998-08-15: Found n = 29767, Tadashi Taura
• 1998-08-15: Found n = 29049, Tadashi Taura
• 1996-07: Found n = 17617, Patrick Demichel