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freeCodeCamp/curriculum/challenges/chinese/10-coding-interview-prep/project-euler/problem-457-a-polynomial-modulo-the-square-of-a-prime.md

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---
id: 5900f5361000cf542c510048
title: 问题457多项式以素数的平方为模
challengeType: 5
videoUrl: ''
---
# --description--
设fn= n2 - 3n - 1.设p为素数。令Rp是最小的正整数n使得如果存在这样的整数n则fnmod p2 = 0否则Rp= 0。
对于不超过L的所有素数令SRL为ΣRp
找到SR107
# --hints--
`euler457()`应该返回2647787126797397000。
```js
assert.strictEqual(euler457(), 2647787126797397000);
```
# --solutions--