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Williams primes of the form 10•11ⁿ-1

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Current data

Base :	11
Count :	13
Max n :	200,000
Date :	2015-01-19

1, 3, 37, 119, 255, 355, 371, 497, 1759, 34863, 50719, 147709, 263893

Remarks :

Unknown status for 200000 ≤ n ≤ 263893.
The sequence A046867 in OEIS

History

2010-01-04: Found n = 263893, Brian Lody
2006-10-30: Checked to n = 5000, Hugo Platzer
2003: Found n = 1759, Robert G. Wilson

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Williams prime MM