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how to check number is prime number or not

here is the solution to find a number is prime or not


  function isPrime(num){

    if(num <= 1) return false;

    if(num <= 3 ) return true;

    if(num%2 === 0 || num%3 === 0) return false;

    return true;


You can now find Prime numbers from 1 to 100 in matter of secs!! The link to find prime numbers from 100 to 200 is ...

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