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Proth primes of the form 643•2n+1
Current data
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History
- 2023-04-30: Checked to n = 4000000, PrimeGrid Proth Prime Search
- 2021-05-07: Found n = 3030650, Brian D. Niegocki, PrimeGrid Proth Prime Search
- 2019-07: Checked n = 3322000 - 3640000, PrimeGrid Proth Mega Prime Search
- 2018-03-28: Found n = 3501974, Stefan Larsson, PrimeGrid Proth Mega Prime Search
- 2014-04-27: Found n = 2078306, Randall Scalise, PrimeGrid Proth Prime Search
- 2011-11-14: Found n = 1272644, Jim Foody, PrimeGrid Proth Prime Search
- 2010-03-10: Found n = 782318, Senji Yamashita, PrimeGrid Proth Prime Search
- 2007-09-27: Found n = 371354, Steven Harvey
- 2008-01-07: Found n = 368558, Steven Harvey
- 2005-04-25: Found n = 318958, Payam Samidoost
- 2005-08-01: Found n = 237350, Steven Harvey
- 1998-07-07: Found n = 26798, Tadashi Taura
- 1993: Found n = 7174, Harvey Dubner