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Generalized Woodall primes of the form `n`•309ⁿ-1

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Current data

Base :	309
Count :	3
Max `n` :	25,000
Date :	2014-03-13

20, 140, 270

History

2014-03-13: Checked to n = 25000, Steven Harvey
2010-11-01: Checked to n = 4000, Steven Harvey

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Woodall prime