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Primality by trial division: Difference between revisions
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→unrolled version: changed a couple of comments. -- ~~~~
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if x<11 then return wordpos(x,'2 3 5 7')\==0 /*is it a wee prime? */
if x//2==0 then return 0 /*eliminate the evens. */
if x//3==0 then return 0 /*
/*
do k=5 by 6 until k*k > x
if x // k == 0 then return 0 /*perform a divide (modulus), */
if x // (k+2) == 0 then return 0 /*
end /*k*/
/*Note: // is modulus. */
return 1 /*did all divisions, it's prime. *//</lang>
'''output''' is identical to the first version.
<br><br>
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