Input: 13195 Expected Result: 29 (largest prime factor of input) Actual Result: 2639 (largest factor of input, but not a prime number)  I didn't bother with even numbers because the largest prime will either be 2 or some odd prime multiplied by 2...
I am trying to determine whether the value in a text box is prime or not using jQuery.  Here is what I've tried so far, but it's not working:    $("#textbx").keyup(function(){  if ($("#textbx").val().length > 0) { 	  $("...
And how can I correct them to work? I am trying to optimize my sieve per previous suggestions, but in both instances the code breaks:  Incrementing j = j + ( i * 2) will break the code.  Obviously I'm missing some concept on optimizations as well...
I have an input field to take a maximum number and find all smaller prime numbers.  It should return to an array and display the array with an alert.  Except I'm getting blank every time.  HTML:  <p>Please enter the maximum number you'd...
So I wanted to write a function that returns the sum of all prime numbers up to and including a provided number.   I have written this, which works:    function sumPrimes(num) {   const arr = Array.from({length: num+1}, (v, k) => k).slice(2);   re...
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I'm trying to sum all primes up to a number.  First I removed all evens and pushed the rest to an odd-only array.  Then i'm going over the array and splicing all the numbers that divide by other numbers but 1 and themselves, and replacing the...
My task is to produce an array containing all the prime numbers up to a 12-digit number.   I tried to emulate the Sieve of Eratosthenes by first making a function enumerate that produces an array containing every integer from 2 to num:  var enumerate...
I've got an assignment to write a js code using only loops that recieves a number from a user and prints out all the prime numbers between 1 and that number.  Thats what I've done, but its not working as I expect it to, cant find what Im miss...
I made this prime factorization program that works really well.The only problem is that, when the input is a large number it freezes the browser. My goal is to make the whole calculation last longer, and not freeze the browser. I have tried several m...

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