---
id: 5900f48f1000cf542c50ffa1
challengeType: 5
title: 'Problem 290: Digital Signature'
videoUrl: ''
localeTitle: 'Problema 290: Assinatura Digital'
---

## Description
<section id="description"> Quantos inteiros 0 ≤ n &lt;1018 têm a propriedade que a soma dos dígitos de n é igual à soma dos dígitos de 137n? </section>

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

## Tests
<section id='tests'>

```yml
tests:
  - text: <code>euler290()</code> deve retornar 20444710234716470.
    testString: 'assert.strictEqual(euler290(), 20444710234716470, "<code>euler290()</code> should return 20444710234716470.");'

```

</section>

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

<div id='js-seed'>

```js
function euler290() {
  // Good luck!
  return true;
}

euler290();

```

</div>



</section>

## Solution
<section id='solution'>

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