--- id: 5900f4671000cf542c50ff79 challengeType: 5 title: 'Problem 249: Prime Subset Sums' videoUrl: '' localeTitle: 问题249:Prime子集总和 --- ## Description
令S = {2,3,5,...,4999}为小于5000的素数集。求出S的子集数,其元素之和为素数。输入最右边的16位数字作为答案。
## Instructions
## Tests
```yml tests: - text: euler249()应该返回9275262564250418。 testString: 'assert.strictEqual(euler249(), 9275262564250418, "euler249() should return 9275262564250418.");' ```
## Challenge Seed
```js function euler249() { // Good luck! return true; } euler249(); ```
## Solution
```js // solution required ```