big number has a has_factor

has_factor.php

<?php
function chk_simple(int $value): bool {
    $square_root_of_value = sqrt($value);
    if (!($value % 2) ||!($value % 3) || $square_root_of_value === ceil($square_root_of_value)) {
        return false;
    }
    
    $square_root_of_value = (int)$square_root_of_value;

    $del3 = 0;
    $iterations = 0;
    for ($i = 5;$i < $square_root_of_value; $i = $i + 2) {
        ++$iterations;
        if (++$del3 > 2) {
            $del3 = 0;
            //var_dump('skip:'. $del3 . '-'.$i);
            continue;
        }
        if (!($value % $i)) {
            var_dump([
                'num' => $i,
                'iterations' => $iterations
            ]);
            return false;
        }
    }
    var_dump([
        'num' => false,
        'iterations' => $iterations
    ]);
    
    return true;
}
var_dump(chk_simple(126221));
var_dump(chk_simple(600851475143));
var_dump(chk_simple(2147483647));