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Proth primes of the form 11•2n+1
Current data
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History
- 2021-04-01: Checked to n = 9000000, PrimeGrid Fermat Divisor Search
- 1979: Checked n = 1500 - 4000, Gordon V. Cormack, Hugh C. Williams
- 1979: Found n = 3225, Gordon V. Cormack, Hugh C. Williams