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The reverse Sierpinski/Riesel problem
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2017-01-24, 16:05
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sweety439
Nov 2016
3×5×13
^{2}
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There is not a Sierpinski base if and only if k is of the form 2^r-1.
There is not a Riesel base if and only if k is of the form 2^r+1.
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