note 103766 added to function.gmp-prob-prime
| From: | roland at mxchange dot org | Date: | Tue, 03 May 2011 02:19:55 +0000 |
| Subject: | note 103766 added to function.gmp-prob-prime | ||
| Groups: | php.notes | ||
| Request: | Send a blank email to php-notes+get-179351@lists.php.net to get a copy of this message | ||
To repeat my posting again from gmp_pow() page because it doesn't belong there:
-------------------------------------------
Here is a simple demonstration code to fine prime possibilities. On my 64 bit Linux box I can only
go until 61, larger numbers causes warnings due to the EXP number:
<?php
for ($idx = 0; $idx <= 61; $idx++) {
$pow = (gmp_strval(gmp_pow('2', $idx)) - 1);
$prop = gmp_prob_prime($pow);
if ($prop > 0) {
echo 'idx=' . $idx . "\n--------\n";
echo 'pow=' . $pow . "\n";
echo 'prop=' . $prop . "\n------\n";
}
}
?>
By 'pow' is the possible prime number.
----
Server IP: 212.124.37.9
Probable Submitter: 94.221.156.102
----
Manual Page -- http://www.php.net/manual/en/function.gmp-prob-prime.php
Edit -- https://master.php.net/note/edit/103766
Del: integrated -- https://master.php.net/note/delete/103766/integrated
Del: useless -- https://master.php.net/note/delete/103766/useless
Del: bad code -- https://master.php.net/note/delete/103766/bad+code
Del: spam -- https://master.php.net/note/delete/103766/spam
Del: non-english -- https://master.php.net/note/delete/103766/non-english
Del: in docs -- https://master.php.net/note/delete/103766/in+docs
Del: other reasons-- https://master.php.net/note/delete/103766
Reject -- https://master.php.net/note/reject/103766
Search -- https://master.php.net/manage/user-notes.php