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Talk:Sexy primes: Difference between revisions
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The task's author used '''1,000,000''' as a test case upper limit.
However, if he had chosen '''100''', most computer programs would give an erroneous number of unsafe primes, as '''97''' is a sexy prime. Most computer programs only check up to '''N'''. As of this writing, only REXX checks for sexy primes up to '''N + 6''', and carefully programs not to list sexy primes over the upper limit (but still finds but not displays the upper half of sexy prime pairs if it exceeds the upper limit).
Also, it isn't clear that in the above case, should '''97''' be listed as the 1<sup>st</sup> half of a sexy prime pair if the top part of the pair is above the upper limit?
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