Primes whose sum of digits is 25: Difference between revisions

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m (elided part of the wording in the task requirement (for all primes > 0).)
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;Stretch goal
Show the total number<u>count</u> of all such primes that do not contain any zeroes (997in <=the nrange: &nbsp; <= 1,111,111,111,111,111,111,111,111).
::: <big>(997 &nbsp; &le; &nbsp; '''n''' &nbsp; &le; &nbsp; 1,111,111,111,111,111,111,111,111). </big>
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