Proth primes of the form 791•2n+1

Reserved! This sequence is currently part of Multi Reservation 1: PrimeGrid Proth Prime Search.

Current data

k , b : 791 , 2 Count : 37 Nash : 1586 Max n : 3,070,000 Date : 2021-08-15 Reserved : PrimeGridPrimeGrid/Reserved

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

• 2021-06-11: Found n = 3055695, Rudi Tapper, PrimeGrid Proth 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