2 x 2 x 13
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2 x 2 x 13
That appears to be two numbers long.
$string ="Guess my length"; $length = strlen($string); now the $length will have the length of the string.
what is a factor string with 1 to 144
The longest factor string is 2x2x2x3x13. It is always best to list your factor string from the least to greatest number.