Difference between revisions of "Riesel number"

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A Riesel number is a value of k such that k × 2ⁿ - 1 is always composite.

Using the same method presented in the Sierpiński problem article, H.Riesel found in 1956 that 509203 × 2ⁿ - 1 is always composite.

In order to demonstrate whether 509203 is the smallest Riesel number or not (the Riesel problem), a distributed computing project was created named Riesel Sieve.

Number classes

General numbers

Special numbers

Prime numbers

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 {{Stub}}
-A '''Riesel number''' is a value of k such that k &times; 2<sup>N</sup> - 1 is always composite.
+A '''Riesel number''' is a value of k such that k &times; 2<sup>n</sup> - 1 is always composite.
-Using the same method presented in the [[Sierpinski problem]] article, Riesel found in 1956 that 509203 &times; 2<sup>N</sup> - 1 is always composite.
+Using the same method presented in the [[Sierpiński problem]] article, H.Riesel found in 1956 that 509203 &times; 2<sup>n</sup> - 1 is always composite.
-In order to demonstrate whether 509203 is the smallest Riesel number or not (the '''Riesel conjecture'''), a [[:Category:distributed computing project|distributed computing project]] was created. Its name is [[Riesel Sieve]].
+In order to demonstrate whether 509203 is the smallest Riesel number or not (the '''[[Riesel problem]]'''), a [[distributed computing project]] was created named [[Riesel Sieve]].
 ==See also==
-*[[Riesel Prime Database]]
+*[[Riesel and Proth Prime Database]]
+*[[Riesel problem]]
+*[[Riesel prime]]
 ==External links==
 *[http://mathworld.wolfram.com/RieselNumber.html MathWorld]
-*[http://en.wikipedia.org/wiki/Riesel_number Wikipedia]
+*[[Wikipedia:Riesel number|Riesel number]]
-[[Category:Math]]
+{{Navbox NumberClasses}}
+[[Category:Number]]