freeCodeCamp/curriculum/challenges/spanish/08-coding-interview-prep/project-euler/problem-414-kaprekar-constant.spanish.md

---
id: 5900f50b1000cf542c51001d
challengeType: 5
title: 'Problem 414: Kaprekar constant'
videoUrl: ''
localeTitle: 'Problema 414: constante de subtítulos'
---

## Description
undefined

## Instructions
<section id="instructions">
</section>

## Tests
<section id='tests'>

```yml
tests:
  - text: <code>euler414()</code> debe devolver 552506775824935500.
    testString: 'assert.strictEqual(euler414(), 552506775824935500, "<code>euler414()</code> should return 552506775824935500.");'

```

</section>

## Challenge Seed
<section id='challengeSeed'>

<div id='js-seed'>

```js
function euler414() {
  // Good luck!
  return true;
}

euler414();

```

</div>



</section>

## Solution
<section id='solution'>

```js
// solution required
```
</section>