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Semiprime: Difference between revisions
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Semiprime numbers are natural numbers that are products of exactly two (possibly equal) [[prime_number|prime numbers]].
Example: 1679 = 23 × 73 (This particular number was chosen as the length of the [http://en.wikipedia.org/wiki/Arecibo_message Arecibo message]). ▼
;Example:
1679 = 23 × 73
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;Task;
Write a function determining whether a given number is semiprime.
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