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Williams primes of the form 21•20ⁿ+1

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Current data

Base :	20
Count :	9
Max n :	25,000
Date :	2018-03-09

1, 6, 191, 468, 644, 1583, 3926, 17163, 24371

History

2018-03-09: Checked to n = 25000, Eric Chen
2016: Checked to n = 1000, Mauro Fiorentini

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Williams prime PP