To find the least number that must be subtracted from 13, I need a bit more information about the condition or goal for the subtraction. For example:
- Are you trying to make the result a specific number (like a multiple of something)?
- Are you trying to make the result zero or less than zero?
- Are you trying to make the result a perfect square or some other property?
Could you please clarify the condition or what you want to achieve by subtracting from 13?
