freeCodeCamp/curriculum/challenges/russian/08-coding-interview-prep/project-euler/problem-123-prime-square-re...

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---
id: 5900f3e71000cf542c50fefa
challengeType: 5
title: 'Problem 123: Prime square remainders'
forumTopicId: 301750
localeTitle: 'Задача 123: остатки Prime Square'
---
## Description
<section id='description'>
Пусть pn - n-е число простых чисел: 2, 3, 5, 7, 11, ... и r - остаток, когда (pn-1) n + (pn + 1) n делится на pn2. Например, когда n = 3, p3 = 5 и 43 + 63 = 280 ≡ 5 mod 25. Наименьшее значение n, для которого остаток сначала превышает 109, составляет 7037. Найдите наименьшее значение n, для которого остаток сначала превышает 1010.
</section>
## Instructions
<section id='instructions'>
</section>
## Tests
<section id='tests'>
```yml
tests:
- text: <code>euler123()</code> should return 21035.
testString: assert.strictEqual(euler123(), 21035);
```
</section>
## Challenge Seed
<section id='challengeSeed'>
<div id='js-seed'>
```js
function euler123() {
// Good luck!
return true;
}
euler123();
```
</div>
</section>
## Solution
<section id='solution'>
```js
// solution required
```
</section>