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isprime

Determine which array elements are prime

Syntax

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

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Determine if Double Integer Values Are Prime

tf = isprime([2 3 0 6 10])
tf =

     1     1     0     0     0

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

Determine if Unsigned Integer Values Are Prime

x = uint16([333 71 99]);
tf = isprime(x)
tf =

     0     1     0

71 is prime, but 333 and 99 are not.

Input Arguments

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X — Input valuesscalar, vector, or array of real, nonnegative integer values

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

See Also

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Introduced before R2006a

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