Rechercher une fonction PHP

gmp_nextprime

Contents

(PHP 5 >= 5.2.0, PHP 7)

gmp_nextprime — Find next prime number

Description

gmp_nextprime ( int $a ) : GMP

Find next prime number

PHP: gmp_nextprime - Manual Home of Manuel PHP  Contents Haut

Parameters

a

Either a GMP number resource in PHP 5.5 and earlier, a GMP object in PHP 5.6 and later, or a numeric string provided that it is possible to convert the latter to a number.

PHP: gmp_nextprime - Manual Home of Manuel PHP  Contents Haut

Return Values

Return the next prime number greater than a, as a GMP number.

PHP: gmp_nextprime - Manual Home of Manuel PHP  Contents Haut

Examples

Example #1 gmp_nextprime() example

<?php
$prime1 = gmp_nextprime(10); // next prime number greater than 10
$prime2 = gmp_nextprime(-1000); // next prime number greater than -1000

echo gmp_strval($prime1) . "\n";
echo gmp_strval($prime2) . "\n";
?>

The above example will output:

11
2

PHP: gmp_nextprime - Manual Home of Manuel PHP  Contents Haut

Notes

Note:

This function uses a probabilistic algorithm to identify primes and chances to get a composite number are extremely small.

Find a PHP function

English translation

You have asked to visit this site in English. For now, only the interface is translated, but not all the content yet.

If you want to help me in translations, your contribution is welcome. All you need to do is register on the site, and send me a message asking me to add you to the group of translators, which will give you the opportunity to translate the pages you want. A link at the bottom of each translated page indicates that you are the translator, and has a link to your profile.

Thank you in advance.

Document created the 30/01/2003, last modified the 26/10/2018
Source of the printed document:https://www.gaudry.be/en/php-rf-gmp-nextprime.html

The infobrol is a personal site whose content is my sole responsibility. The text is available under CreativeCommons license (BY-NC-SA). More info on the terms of use and the author.

References

  1. View the html document Language of the document:fr Manuel PHP : http://php.net

These references and links indicate documents consulted during the writing of this page, or which may provide additional information, but the authors of these sources can not be held responsible for the content of this page.
The author This site is solely responsible for the way in which the various concepts, and the freedoms that are taken with the reference works, are presented here. Remember that you must cross multiple source information to reduce the risk of errors.

Contents Haut