6cfd0fc503
* fix: improve Project Euler descriptions and test case Improve formatting of Project Euler test descriptions. Also add poker hands array and new test case for problem 54 * feat: add typeof tests and gave functions proper names for first 100 challenges * fix: continue fixing test descriptions and adding "before test" sections * fix: address review comments * fix: adjust grids in 18 and 67 and fix some text that reference files rather than the given arrays * fix: implement bug fixes and improvements from review * fix: remove console.log statements from seed and solution
66 lines
1.3 KiB
Markdown
66 lines
1.3 KiB
Markdown
---
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id: 5900f3ce1000cf542c50fee0
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challengeType: 5
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title: 'Problem 97: Large non-Mersenne prime'
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forumTopicId: 302214
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---
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## Description
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<section id='description'>
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The first known prime found to exceed one million digits was discovered in 1999, and is a Mersenne prime of the form 2<sup>6972593</sup>−1; it contains exactly 2,098,960 digits. Subsequently other Mersenne primes, of the form 2<sup><var>p</var></sup>−1, have been found which contain more digits.
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However, in 2004 there was found a massive non-Mersenne prime which contains 2,357,207 digits: 28433×2<sup>7830457</sup>+1.
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Find the last ten digits of this prime number.
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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>lrgNonMersennePrime()</code> should return a number.
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testString: assert(typeof lrgNonMersennePrime() === 'number');
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- text: <code>lrgNonMersennePrime()</code> should return 8739992577.
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testString: assert.strictEqual(lrgNonMersennePrime(), 8739992577);
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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 lrgNonMersennePrime() {
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// Good luck!
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return true;
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}
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lrgNonMersennePrime();
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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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