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freeCodeCamp/curriculum/challenges/chinese/10-coding-interview-prep/project-euler/problem-291-panaitopol-primes.md

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---
id: 5900f48f1000cf542c50ffa2
title: 问题291Panaitopol素数
challengeType: 5
videoUrl: ''
---
# --description--
如果对于某些正整数x和y素数p称为Panaitopol素数。
找出多少个Panaitopol素数小于5×1015。
# --hints--
`euler291()`应该返回4037526。
```js
assert.strictEqual(euler291(), 4037526);
```
# --solutions--