Anonymous user
Concatenate two primes is also prime: Difference between revisions
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m (→{{header|REXX}}: simplified a DO loop.) |
m (→{{header|REXX}}: aligned a statement and comment.) |
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do k=1 for ##; cat2= @.j || @.k /*create a concatenated prime (base 10)*/
if !.cat2 then a.cat2= 1 /*flag it as being a "2cat" prime. */
end /*j*/
found= 0; idx= 1 /*initialize # of primes found; IDX. */
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