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Q: Is it proper to include 1 in a factor string?

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what is a factor string with 1 to 144

The factors of 6 are 1,2,3 and 6. The proper factors of 6 are 2 and 3. Factors of a number include the number itself and 1, proper factors don't include them.

The factors of a number include 1 and the number itself. The proper factors do not.

Depending on your definition of proper factors, the set of proper factor factors either doesn't include 1 and/or the number itself for a given number.

If you include 1 as a proper factor, the answer is 64.

The PROPER factor of 19 is 1 and just 1. Since 19 is a prime number its only proper factor is 1. Any prime number only has 1 proper factor which is 1.

No.

A factor string is a name for a number written as a product of two or more factors. In a factor string, 1 may not be used as a factor. For example, a factor string for 24 is 2 X 3 X 4, or 2 3 4.:0

One has no proper factors.

No.

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.

4 3 and 6 have no proper factor in common. Remember that 1 is a factor of every counting number, but not a proper factor of any of them. Greatest common factor questions do not recognise 1 as a proper factor. When talking of primes neither 1 nor the number itself is regarded as a proper factor.

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