Decode RSA 129 http://en.wikipedia.org/wiki/RSA_numbers#RSA-129

rsa129.php

<?php

$p = '3490529510847650949147849619903898133417764638493387843990820577';
$q = '32769132993266709549961988190834461413177642967992942539798288533';
$N = bi_mul($p, $q);

$c ='96869613754622061477140922254355882905759991124574319874695120930816298225145708356931476622883989628013391990551829945157815154';

$phin = bi_mul(bi_sub($p, 1), bi_sub($q, 1));
$e =  9007;
$d = bi_invmod($e, $phin);

$m = bi_powmod($c, $d, $N);

$m = bi_to_str($m, 10);
$m = str_split($m, 2);
$letters = range('A', 'Z');
array_unshift($letters, ' ');
foreach ($m as $int) {
    echo $letters[(int) $int];
}

echo PHP_EOL;