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gmp_nextprime

(no version information, might be only in CVS)

gmp_nextprime -- Find next prime number

Description

resource gmp_nextprime ( int a )

Return next prime number greater than a.

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

Пример 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 printout of the above program is: 

11
-997


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gmp_or> <gmp_neg
Last updated: Sat, 27 Jan 2007
 
 
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11 июля 2007
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