isPrime.md (1273B)
1 <!-- Note: This file is automatically generated from source code comments. Changes made in this file will be overridden. --> 2 3 # Function isPrime 4 5 Test whether a value is prime: has no divisors other than itself and one. 6 The function supports type `number`, `bignumber`. 7 8 The function is evaluated element-wise in case of Array or Matrix input. 9 10 11 ## Syntax 12 13 ```js 14 math.isPrime(x) 15 ``` 16 17 ### Parameters 18 19 Parameter | Type | Description 20 --------- | ---- | ----------- 21 `x` | number | BigNumber | Array | Matrix | Value to be tested 22 23 ### Returns 24 25 Type | Description 26 ---- | ----------- 27 boolean | Returns true when `x` is larger than zero. Throws an error in case of an unknown data type. 28 29 30 ### Throws 31 32 Type | Description 33 ---- | ----------- 34 35 36 ## Examples 37 38 ```js 39 math.isPrime(3) // returns true 40 math.isPrime(-2) // returns false 41 math.isPrime(0) // returns false 42 math.isPrime(-0) // returns false 43 math.isPrime(0.5) // returns false 44 math.isPrime('2') // returns true 45 math.isPrime([2, 17, 100]) // returns [true, true, false] 46 ``` 47 48 49 ## See also 50 51 [isNumeric](isNumeric.md), 52 [isZero](isZero.md), 53 [isNegative](isNegative.md), 54 [isInteger](isInteger.md)