57 lines
819 B
Markdown
57 lines
819 B
Markdown
---
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id: 5900f4651000cf542c50ff77
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challengeType: 5
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title: 'Problem 248: Numbers for which Euler’s totient function equals 13!'
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---
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## Description
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<section id='description'>
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The first number n for which φ(n)=13! is 6227180929.
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Find the 150,000th such number.
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</section>
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## Instructions
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<section id='instructions'>
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</section>
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## Tests
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<section id='tests'>
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```yml
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tests:
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- text: <code>euler248()</code> should return 23507044290.
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testString: 'assert.strictEqual(euler248(), 23507044290, "<code>euler248()</code> should return 23507044290.");'
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```
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</section>
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## Challenge Seed
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<section id='challengeSeed'>
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<div id='js-seed'>
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```js
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function euler248() {
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// Good luck!
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return true;
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}
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euler248();
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```
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</div>
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</section>
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## Solution
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<section id='solution'>
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```js
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// solution required
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```
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</section>
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