Fatal error: Uncaught TypeError: Unsupported operand types: string + int in /home/factors-of.com/public_html/classes/primesfactory.php:96 Stack trace: #0 /home/factors-of.com/public_html/classes/primesfactory.php(151): primesfactory->isdecimal() #1 /home/factors-of.com/public_html/composite-numbers/index.php(45): primesfactory->go() #2 {main} thrown in /home/factors-of.com/public_html/classes/primesfactory.php on line 96