freeCodeCamp/curriculum/challenges/portuguese/08-coding-interview-prep/project-euler/problem-421-prime-factors-o...

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---
id: 5900f5131000cf542c510024
challengeType: 5
title: 'Problem 421: Prime factors of n15+1'
videoUrl: ''
localeTitle: 'Problema 421: Fatores primos de n15 + 1'
---
## Description
<section id="description"> Os números da forma n15 + 1 são compostos para cada inteiro n&gt; 1. Para inteiros positivos n e m let s (n, m) ser definido como a soma dos fatores primos distintos de n15 + 1 não excedendo m. <p> Por exemplo, 215 + 1 = 3 × 3 × 11 × 331. So s (2,10) = 3 e s (2,1000) = 3 + 11 + 331 = 345. </p><p> Também 1015 + 1 = 7 × 11 × 13 × 211 × 241 × 2161 × 9091. So s (10,100) = 31 e s (10,1000) = 483. Encontre s (n, 108) para 1 n n 1011. </p></section>
## Instructions
<section id="instructions">
</section>
## Tests
<section id='tests'>
```yml
tests:
- text: <code>euler421()</code> deve retornar 2304215802083466200.
testString: 'assert.strictEqual(euler421(), 2304215802083466200, "<code>euler421()</code> should return 2304215802083466200.");'
```
</section>
## Challenge Seed
<section id='challengeSeed'>
<div id='js-seed'>
```js
function euler421() {
// Good luck!
return true;
}
euler421();
```
</div>
</section>
## Solution
<section id='solution'>
```js
// solution required
```
</section>