freeCodeCamp/curriculum/challenges/chinese/10-coding-interview-prep/project-euler/problem-187-semiprimes.md

---
id: 5900f4291000cf542c50ff3a
challengeType: 5
videoUrl: ''
title: 问题187：半致
---

## Description
<section id="description">复合是包含至少两个素因子的数字。例如，15 = 3×5; 9 = 3×3; 12 = 2×2×3。 <p>在30以下有十种复合材料恰好包含两个，不一定是不同的主要因素：4,6,9,10,14,15,21,22,25,26。 </p><p>有多少复合整数，n &lt;108，恰好有两个，不一定是不同的素因子？ </p></section>

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

## Tests
<section id='tests'>

```yml
tests:
  - text: <code>euler187()</code>应该返回17427258。
    testString: assert.strictEqual(euler187(), 17427258);

```

</section>

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

<div id='js-seed'>

```js
function euler187() {
  // Good luck!
  return true;
}

euler187();

```

</div>



</section>

## Solution
<section id='solution'>

```js
// solution required
```

/section>