Actually, 25 is NOT a proper factor of 25. Factors are numbers that, when multiplied with another factor, result in the number, like 25. Proper factors are just like regular factors EXCEPT they do not include the actual number. The proper factors of 25 are 1 and 5.
5
The proper factors of 50 are 2, 5, 10 and 25.
The proper factors of a number do not include one and the number itself.
"Proper factors" are all of a number's factors except one and the number itself.
1, 5, and 25
The proper factors of 50 are 2, 5, 10, and 25.
the proper factors are the factors of a number not including the number itself, or 1.
The proper factors are the regular factors without one and the number itself.
No, no prime number has proper factors.
One has no proper factors.
The set of factors includes one and the number itself. Proper factors do not include those two.