gmp_nextprime
(PHP 5 >= 5.2.0)
gmp_nextprime — Find next prime number
Description
resource gmp_nextprime
( int $a
)
Parameters
-
a
-
It can be either a GMP number resource, or a
numeric string given that it is possible to convert the latter to a number.
Return Values
Return the next prime number greater than a
,
as a GMP number.
Examples
Example #1 gmp_nextprime() example
<?php
$prime1 = gmp_nextprime(10); $prime2 = gmp_nextprime(-1000); echo gmp_strval($prime1) . "\n";
echo gmp_strval($prime2) . "\n";
?>
The above example will output:
Notes
Note:
This function uses a probabilistic algorithm to identify primes and
chances to get a composite number are extremely small.
gmp_neg
