56 lines
896 B
Markdown
56 lines
896 B
Markdown
|
---
|
|||
|
|
id: 5900f4651000cf542c50ff77
|
|||
|
|
challengeType: 5
|
|||
|
|
title: 'Problem 248: Numbers for which Euler’s totient function equals 13!'
|
|||
|
|
videoUrl: ''
|
|||
|
|
localeTitle: 问题248：Euler的totient函数等于13的数字！
|
|||
|
|
---
|
|||
|
|
|
|||
|
|
## Description
|
|||
|
|
<section id="description"> φ（n）= 13的第一个数字n！是6227180929.找到第150,000个这样的数字。 </section>
|
|||
|
|
|
|||
|
|
## Instructions
|
|||
|
|
<section id="instructions">
|
|||
|
|
</section>
|
|||
|
|
|
|||
|
|
## Tests
|
|||
|
|
<section id='tests'>
|
|||
|
|
|
|||
|
|
```yml
|
|||
|
|
tests:
|
|||
|
|
- text: <code>euler248()</code>应返回23507044290。
|
|||
|
|
testString: 'assert.strictEqual(euler248(), 23507044290, "<code>euler248()</code> should return 23507044290.");'
|
|||
|
|
|
|||
|
|
```
|
|||
|
|
|
|||
|
|
</section>
|
|||
|
|
|
|||
|
|
## Challenge Seed
|
|||
|
|
<section id='challengeSeed'>
|
|||
|
|
|
|||
|
|
<div id='js-seed'>
|
|||
|
|
|
|||
|
|
```js
|
|||
|
|
function euler248() {
|
|||
|
|
// Good luck!
|
|||
|
|
return true;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
euler248();
|
|||
|
|
|
|||
|
|
```
|
|||
|
|
|
|||
|
|
</div>
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
</section>
|
|||
|
|
|
|||
|
|
## Solution
|
|||
|
|
<section id='solution'>
|
|||
|
|
|
|||
|
|
```js
|
|||
|
|
// solution required
|
|||
|
|
```
|
|||
|
|
</section>
|