55 lines
1.2 KiB
Markdown
55 lines
1.2 KiB
Markdown
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<!-- Note: This file is automatically generated from source code comments. Changes made in this file will be overridden. -->
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# Function isPrime
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Test whether a value is prime: has no divisors other than itself and one.
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The function supports type `number`, `bignumber`.
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The function is evaluated element-wise in case of Array or Matrix input.
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## Syntax
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```js
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math.isPrime(x)
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```
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### Parameters
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Parameter | Type | Description
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--------- | ---- | -----------
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`x` | number | BigNumber | Array | Matrix | Value to be tested
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### Returns
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Type | Description
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---- | -----------
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boolean | Returns true when `x` is larger than zero. Throws an error in case of an unknown data type.
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### Throws
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Type | Description
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---- | -----------
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## Examples
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```js
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math.isPrime(3) // returns true
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math.isPrime(-2) // returns false
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math.isPrime(0) // returns false
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math.isPrime(-0) // returns false
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math.isPrime(0.5) // returns false
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math.isPrime('2') // returns true
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math.isPrime([2, 17, 100]) // returns [true, true, false]
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```
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## See also
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[isNumeric](isNumeric.md),
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[isZero](isZero.md),
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[isNegative](isNegative.md),
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[isInteger](isInteger.md)
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