primes

  'use strict'

//////////////////////////////////////////////////////////////////
const fn = (a)=>{
  console.time("function 1")
  let count = 0
  for(let i=0; i< a; i++){
    if(a%(i+1) == 0){
      count+=1
    }
    if(count >= 3) break
  }
  console.timeEnd("function 1")
  if(count === 2){
    return {number: a, prime: true}
  }else{
    return {number: a, prime: false}
  }
}
//////////////////////////////////////////////////////////////////
const fn2 = (a)=>{
  console.time("function 2")
  let count = 0
  for(let i=0; i< a; i++){
    { a%(i+1) === 0 && (count += 1) }
    if(count >= 3) break
  }
  console.timeEnd("function 2")
  return count === 2 && {number: a, prime: true} ||
  count >= 3 && {number: a, prime: false}
}
/////////////////////////////////////////////////////////////////
const fn3 = (a)=>{
  console.time("function 3")
  let count = 0
  for(let i=0; i< a; i++){
    { a%(i+1) === 0 && (count += 1) }
    if(count >= 3) break
  }
  console.timeEnd("function 3")
  return count === 2 ? {number: a, prime: true} : {number: a, primes: false}
}



console.log(fn(540298673))
console.log(fn2(540298673))
console.log(fn3(999999937))