Question about the "prime number of iterations"

[marian-c]

Why is the prime number needed, what are the effects referenced in this comment?

Thank you

        // use a prime number of iterations to avoid aliasing effects

        for (var w = 0; w < 97; w++) {
          execute();
        }

6502js/assembler.js

Line 1511 in ab8662b

// use a prime number of iterations to avoid aliasing effects

[tanaydin]

because,

if it's not prime, compiler can try to break by dividers to run less loops.