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Old 2020-10-29, 03:28   #1075
sweety439
 
Nov 2016

22·691 Posts
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If k is rational power of base (b), then .... (let k = b^(r/s) with gcd(r,s) = 1)

* For the Riesel case, this is generalized repunit number to base b^(1/s)
* For the Sierpinski case, if s is odd, then this is generalized (half) Fermat number to base b^(1/s)
* For the Sierpinski case, if s is even, then this is generalized repunit number to negative base -b^(1/s)
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