freeCodeCamp/curriculum/challenges/english/10-coding-interview-prep/project-euler/problem-34-digit-factorials.md

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---
id: 5900f38e1000cf542c50fea1
challengeType: 5
title: 'Problem 34: Digit factorials'
forumTopicId: 301998
---
## Description
<section id='description'>
145 is a curious number, as 1! + 4! + 5! = 1 + 24 + 120 = 145.
Find the numbers and the sum of the numbers which are equal to the sum of the factorial of their digits.
**Note:** as 1! = 1 and 2! = 2 are not sums they are not included.
</section>
## Instructions
<section id='instructions'>
</section>
## Tests
<section id='tests'>
```yml
tests:
- text: <code>digitFactorial()</code> should return an object.
testString: assert.typeOf(digitFactorial(), 'object');
- text: |
<code>digitFactorial()</code> should return { sum: 40730, numbers: [145, 40585] }.
testString: |
assert.deepEqual(digitFactorial(), { sum: 40730, numbers: [145, 40585] });
```
</section>
## Challenge Seed
<section id='challengeSeed'>
<div id='js-seed'>
```js
function digitFactorial() {
var sum = 0;
var numbers = [];
return { sum, numbers };
}
digitFactorial();
```
</div>
</section>
## Solution
<section id='solution'>
```js
// solution required
```
</section>