---
id: 5900f52c1000cf542c51003d
challengeType: 5
title: 'Problem 446: Retractions B'
videoUrl: ''
localeTitle: 问题446：撤回B.
---

## Description
<section id="description">对于每个整数n&gt; 1，函数族fn，a，b由fn，a，b（x）≡ax+ b mod n定义为a，b，x整数和0 <p>对于1≤n≤N，F（N）=ΣR（n4 + 4）。 F（1024）= 77532377300600。 </p><p>求F（107）（mod 1 000 000 007） </p></section>

## Instructions
undefined

## Tests
<section id='tests'>

```yml
tests:
  - text: ''
    testString: 'assert.strictEqual(euler446(), 907803852, "<code>euler446()</code> should return 907803852.");'

```

</section>

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

<div id='js-seed'>

```js
function euler446() {
  // Good luck!
  return true;
}

euler446();

```

</div>



</section>

## Solution
<section id='solution'>

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