run-no-comments.js

function Run (number) {
  var isPrime = true;
  var i = number;
  while (i--) {
    if (i === 0 || i === 1 || i === number)
      continue;
      
    if (!(number % i))
      isPrime = false;
  }
  return isPrime;
}

run.js

// Check if a number is prime.
// Takes an integer. Make it big.

function Run (number) {
  var isPrime = true; // assume it's prime, we'll try to disprove
  
  var i = number; // we'll iterate through all the numbers before it
  while (i--) {
    // every number is divisible by itself and one,
    // we don't want to divide it by zero
    if (i === 0 || i === 1 || i === number)
      continue; // continue actually means skip the rest
                // of this iteration and keep looping
  
    // if it's divisible by any other number
    if (!(number % i))
      isPrime = false; // then it's not a prime number
  }
  
  return isPrime;
}

tasks.njson

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