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Riesel primes of the form 20747•2ⁿ-1

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Current data

`k` , `b` :	20747 , 2
Count :	17
Nash :	1307
Max `n` :	50,000
Date :	2008-01-07

16, 28, 38, 46, 58, 74, 206, 436, 464, 1186, 1528, 2448, 6814, 7786, 32144, 37148, 41494^[1]

Notes

↑ Woodall 20747•4²⁰⁷⁴⁷-1, Near Woodall 41494•2⁴¹⁴⁹³-1

History

2008-01-07: Checked to n = 50000, Karsten Bonath
1998-07-03: Found n = 41494, Henri Lifchitz

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