15 lines
376 B
Markdown
15 lines
376 B
Markdown
### isPrime
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Checks if the provided integer is a prime number.
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Returns `false` if the provided number has positive divisors other than 1 and itself or if the number itself is less than 2.
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```js
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const isPrime = num =>
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for (var i = 2; i < num; i++) if (num % i == 0) return false;
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return num >= 2;
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// isPrime(11) -> true
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// isPrime(12) -> false
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// isPrime(1) -> false
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```
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