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gikf 5a52c229f5 fix(curriculum): clean-up Project Euler 181-200 (#42819)
* fix: clean-up Project Euler 181-200

* fix: corrections from review

Co-authored-by: Tom <20648924+moT01@users.noreply.github.com>

* fix: missing delimiter

Co-authored-by: Tom <20648924+moT01@users.noreply.github.com>
2021-07-15 15:52:14 +02:00

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---
id: 5900f42f1000cf542c50ff41
title: 'Problem 193: Squarefree Numbers'
challengeType: 5
forumTopicId: 301831
dashedName: problem-193-squarefree-numbers
---
# --description--
A positive integer $n$ is called squarefree, if no square of a prime divides $n$, thus 1, 2, 3, 5, 6, 7, 10, 11 are squarefree, but not 4, 8, 9, 12.
How many squarefree numbers are there below $2^{50}$?
# --hints--
`squarefreeNumbers()` should return `684465067343069`.
```js
assert.strictEqual(squarefreeNumbers(), 684465067343069);
```
# --seed--
## --seed-contents--
```js
function squarefreeNumbers() {
return true;
}
squarefreeNumbers();
```
# --solutions--
```js
// solution required
```