67 lines
1.0 KiB
Markdown
67 lines
1.0 KiB
Markdown
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---
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id: 5
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localeTitle: 5900f4ed1000cf542c50ffff
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challengeType: 5
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title: 'Problem 383: Divisibility comparison between factorials'
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---
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## Description
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<section id='description'>
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Sea f5 (n) el entero más grande x para el que 5x divide n.
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Por ejemplo, f5 (625000) = 7.
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Sea T5 (n) el número de enteros i que satisfacen f5 ((2 · i-1)!) <2 · f5 (i!) Y 1 ≤ i ≤ n.
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Se puede verificar que T5 (103) = 68 y T5 (109) = 2408210.
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Encuentre T5 (1018).
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</section>
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## Instructions
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<section id='instructions'>
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</section>
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## Tests
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<section id='tests'>
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```yml
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tests:
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- text: <code>euler383()</code> debe devolver 22173624649806.
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testString: 'assert.strictEqual(euler383(), 22173624649806, "<code>euler383()</code> should return 22173624649806.");'
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```
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</section>
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## Challenge Seed
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<section id='challengeSeed'>
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<div id='js-seed'>
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```js
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function euler383() {
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// Good luck!
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return true;
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}
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euler383();
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```
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</div>
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</section>
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## Solution
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<section id='solution'>
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```js
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// solution required
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```
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</section>
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