The proper factors of a number are all its factors except itself. Sometimes, the number 1 is also excluded. So, the proper factors of 6 are either 1, 2, and 3, or if excluding the number 1, they are 2 and 3. (If your instructor distinguishes between proper factors and proper divisors, then proper factors are all the factors of a number except 1 and itself, while proper divisors are all the factors of a number except itself, but often proper factors is the only term used, so check whether 1 is included in the definition you are using.)
The list of factors in the question "What are the factors of the numbers from 1 to 100" (see link below) includes both 1 and the number itself, but if you remove the number itself, and the 1 if it is excluded in the definition of proper factor that you are using, you will have the complete list of proper factors.
The prime numbers, which only have themselves and 1 as factors, are in bold in the list of factors on that page. Their proper factors are either the number 1, or if 1 is excluded, they have no proper factors.
Short List of Proper Factors:
As an example, here are the proper factors (including 1, which is sometimes used and sometimes not) for the first 10 numbers:
1: No proper factors
2: 1
3: 1
4: 1, 2
5: 1
6: 1, 2, 3
7: 1
8: 1, 2, 4
9: 1, 3
10: 1, 2, 5
A less unwieldy versionIn practice, it seems unlikely that anyone wants you to continue the above list to 100. (That would be 3 sides of handwritten A4 paper.) Maybe they only wanted to know which numbers appear in the list of proper factors. For example, the proper factors of numbers from 1 to 10 are 1, 2, 3, 4 and 5 (as you can see above).No 9 is not prime. It's factors are 1,3,9. Proper factors: 1,3. Factors are numbers that are multiplied with other numbers to get a product. Proper factors are factors of a number except for itself. No 9 is not prime. It's factors are 1,3,9. Proper factors: 1,3. Factors are numbers that are multiplied with other numbers to get a product. Proper factors are factors of a number except for itself. Composite numbers are numbers with more than 2 factors and more than 1 proper factor. Prime is the opposite of composite.
You might be thinking of proper factors. Proper factors are just like the set of regular factors, except for 1 and the number itself.
4, 9, 25, and 49 are all of the numbers between 1 and 100 having 3 factors.
Both 25 and 4 are factors of 100 and are square numbers, 25 is 52 and 4 is 22. 100 and 1 are also factors of 100, and are also square numbers: 1 is 12 and 100 is 102.
Since the numbers 97 and 100 share no positive integer factors other than 1, the proper fraction 97/100 is already expressed in its simplest form.
The factors of all of the numbers from 1 to 100 are all of the numbers from 1 to 50.
All of the numbers from 1 to 100 are the factors in the set of numbers from 2 to 100.
The factors of 97 are 1 and 97. Prime numbers don't have "proper" factors.
the proper factors are the factors of a number not including the number itself, or 1.
No 9 is not prime. It's factors are 1,3,9. Proper factors: 1,3. Factors are numbers that are multiplied with other numbers to get a product. Proper factors are factors of a number except for itself. No 9 is not prime. It's factors are 1,3,9. Proper factors: 1,3. Factors are numbers that are multiplied with other numbers to get a product. Proper factors are factors of a number except for itself. Composite numbers are numbers with more than 2 factors and more than 1 proper factor. Prime is the opposite of composite.
You might be thinking of proper factors. Proper factors are just like the set of regular factors, except for 1 and the number itself.
Nine proper factors: 1 2 4 5 10 20 25 50 100.
41 is prime, therefore the factors are 1 and 41. Prime numbers don't have "proper" factors.
13 is a prime number so the only factors are 1 and itself. Prime numbers have no proper factors.
Each of the 25 prime numbers from 1 to 100 has exactly two factors, 1 and the number itself. The other 75 numbers from 1 to 100 are not prime numbers because none of them have exactly two factors.
No 9 is not prime. It's factors are 1,3,9. Proper factors: 1,3. Factors are numbers that are multiplied with other numbers to get a product. Proper factors are factors of a number except for itself. Composite numbers are numbers with more than 2 factors and more than 1 proper factor. Prime is the opposite of composite.
Prime numbers don't have proper factors.