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Riesel primes of the form 20491•2ⁿ-1

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Current data

`k` , `b` :	20491 , 2
Count :	21
Nash :	1741
Max `n` :	50,000
Date :	2022-06-08

3, 9, 19, 25, 39, 69, 111, 127, 163, 291, 793, 801, 1905, 2025, 2823, 5463, 7629, 7701, 9691, 9825, 29343

History

2022-06-08: Checked to n = 50000, Alexander Jones
1989: Found n = 9691, John Brown, Landon Curt Noll, Bodo Parady, Gene Smith, Joel Smith, Sergio Zarantonello, Amdahl Six

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