Proth primes of the form 677•2n+1

Current data

k , b : 677 , 2 Type : Low Count : 13 Nash : 759 Max n : 4,000,000 Date : 2023-04-30

3, 63, 127, 547, 823, 6663, 11767, 46035, 51235, 85695, 480447, 3063403, 3369115

History

• 2023-04-30: Checked to n = 4000000, PrimeGrid Proth Prime Search
• 2021-07-01: Found n = 3063403, Kyle Polansky, PrimeGrid Proth Prime Search
• 2019-07: Checked n = 3322000 - 3640000, PrimeGrid Proth Mega Prime Search
• 2017-02-21: Found n = 3369115, Wolfgang Schmidt, PrimeGrid Proth Mega Prime Search (Official announcement)
• 2008-12-30: Found n = 480447, Jim Foody, PrimeGrid Proth Prime Search
• 2001-10-26: Found n = 85695, Jim Fougeron
• 1996-03: Found n = 6663, Patrick Demichel