# Documentation

### This is machine translation

Translated by
Mouse over text to see original. Click the button below to return to the English verison of the page.

# isprime

Determine which array elements are prime

## Syntax

• ``TF = isprime(X)``
example

## Description

example

````TF = isprime(X)` returns a logical array the same size as `X`. The value at `TF(i)` is `true` when `X(i)` is a prime number. Otherwise, the value is `false`.```

## Examples

collapse all

```tf = isprime([2 3 0 6 10]) ```
```tf = 1×5 logical array 1 1 0 0 0 ```

`2` and `3` are prime, but `0`, `6`, and `10` are not.

```x = uint16([333 71 99]); tf = isprime(x) ```
```tf = 1×3 logical array 0 1 0 ```

`71` is prime, but `333` and `99` are not.

## Input Arguments

collapse all

Input values, specified as a scalar, vector, or array of real, nonnegative integer values.

Example: `17`

Example: ```[1 2 3 4]```

Example: ```int16([127 255 4095])```

Data Types: `single` | `double` | `int8` | `int16` | `int32` | `int64` | `uint8` | `uint16` | `uint32` | `uint64`