Nice primes: Difference between revisions

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(→‎{{header|Factor}}: add some comments)
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{{math|dr<sub>''10''</sub>(<var>n</var>) &#61; 0 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if <var>n</var> &#61; 0,}}
: {{math|dr<sub>''10''</sub>(<var>n</var>) &#61; 0 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if <var>n</var> &#61; 0,}}


{{math|dr<sub>''10''</sub>(<var>n</var>) &#61; 1 + ((<var>n</var> - 1) mod 9) &nbsp; &nbsp; if <var>n</var> &#8800; 0.}}
: {{math|dr<sub>''10''</sub>(<var>n</var>) &#61; 1 + ((<var>n</var> - 1) mod 9) &nbsp; &nbsp; if <var>n</var> &#8800; 0.}}
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