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Truncatable primes: Difference between revisions
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→{{header|REXX}}: changed some comments.
m (→{{header|REXX}}: moved generation of primes into a subroutine, optimized the generation of primes.) |
m (→{{header|REXX}}: changed some comments.) |
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/* [↓] generate more primes ≤ high.*/
do j=@.#+2 by 2 for max(0, hi%2-@.#%2-1) /*find odd primes from here on. */
parse var j '' -1 _; if _==5 then iterate /*
if j// 3==0 then iterate /*
if j// 7==0 then iterate /*" " " 7? */
/* [↑] the above five lines saves time*/
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