21 lines
393 B
PHP
21 lines
393 B
PHP
<?php
|
|
define('MAX',1000);
|
|
|
|
$max_len = 0;
|
|
for($div = MAX; $div > 2; $div--) {
|
|
$result = bcdiv('1',(string)$div,2000);
|
|
|
|
for($len = 2; $len < 1000; $len++) {
|
|
if(substr($result,10,$len) === substr($result,10+$len,$len)) {
|
|
if($len > $max_len) {
|
|
echo "Div: ".$div. " Len: ".$len."\n";
|
|
$max_len = $len;
|
|
$max_div = $div;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
}
|
|
echo $max_div;
|