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Untouchable numbers: Difference between revisions
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→{{header|REXX}}: changed wording in the REXX section header.
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=={{header|REXX}}==
Some optimization was done to the code to produce prime numbers, since a simple test could be made to exclude
<br>the calculation of touchability for primes as the aliquot sum of a prime is always unity.
<br>This saved around '''15%''' of the running time.
A fair amount of code was put into the generation of primes, but the computation of the aliquot sum
<br>that
This version doesn't appear to calculate the correct number of untouchable numbers for one million.
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