freeCodeCamp/curriculum/challenges/chinese/10-coding-interview-prep/project-euler/problem-273-sum-of-squares.md

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---
id: 5900f47e1000cf542c50ff90
title: 问题273正方形的总和
challengeType: 5
videoUrl: ''
---
# --description--
考虑以下形式的方程a2 + b2 = N0≤a≤bab和N整数。
对于N = 65有两种解决方案a = 1b = 8a = 4b = 7。我们将SN称为a2 + b2 = N0≤a≤bab和N整数的所有解的a的值之和。因此S65= 1 + 4 = 5.找到ΣSN对于所有无平均N只能被4k + 1形式的素数整除其中4k + 1 <150。
# --hints--
`euler273()`应该返回2032447591196869000。
```js
assert.strictEqual(euler273(), 2032447591196869000);
```
# --solutions--