2018-10-08 17:51:51 +00:00
---
2018-10-10 20:20:40 +00:00
id: 5900f5041000cf542c510016
2018-10-08 17:51:51 +00:00
challengeType: 5
title: 'Problem 407: Idempotents'
2018-10-10 20:20:40 +00:00
videoUrl: ''
localeTitle: 'Problema 407: Idempotentes'
2018-10-08 17:51:51 +00:00
---
## Description
2018-10-10 20:20:40 +00:00
< section id = "description" > Si calculamos a2 mod 6 para 0 ≤ a ≤ 5 obtenemos: 0,1,4,3,4,1. < p > El valor más grande de a tal que a2 ≡ a mod 6 es 4. Llamemos a M (n) el valor más grande de a < n tal que a2 ≡ a (mod n). Entonces M (6) = 4. < / p > < p > Encuentra ∑M (n) para 1 ≤ n ≤ 107. < / p > < / section >
2018-10-08 17:51:51 +00:00
## Instructions
2018-10-10 20:20:40 +00:00
< section id = "instructions" >
2018-10-08 17:51:51 +00:00
< / section >
## Tests
< section id = 'tests' >
```yml
tests:
- text: < code > euler407()</ code > debe devolver 39782849136421.
testString: 'assert.strictEqual(euler407(), 39782849136421, "< code > euler407()< / code > should return 39782849136421.");'
```
< / section >
## Challenge Seed
< section id = 'challengeSeed' >
< div id = 'js-seed' >
```js
function euler407() {
// Good luck!
return true;
}
euler407();
2018-10-10 20:20:40 +00:00
2018-10-08 17:51:51 +00:00
```
< / div >
< / section >
## Solution
< section id = 'solution' >
```js
// solution required
```
< / section >