Semiprime: Difference between revisions

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{{task|Prime Numbers}} 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 (This particular number was chosen as the length of the [http://en.wikipedia.org/wiki/Arecibo_message Arecibo message]).
 
Write a function determining whether a given number is semiprime.
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=={{header|Ada}}==