1 and 3
Okay. Give us a pair of numbers.
A common factor of several numbers is a number that can divide evenly into each one of them. '10' is a common factor of 20 and 30. '5' is a common factor of 10 and 15. '3' is a common factor of 6, 9, and 12. '2' is a common factor of all even numbers. '1' is a common factor of all whole numbers.
Numerators and denominators are just numbers. List the factors of each and circle the numbers that appear on both lists. These are common factors.
Example: What are the common prime factors of 120 and 252?Find the prime factorization of each number by breaking it down into the lowest possible numbers that can be multiplied together to make the original number.120 = 2x60 = 2x2x30 = 2x2x2x15 = 2x2x2x3x5252 = 2x126 = 2x2x63 = 2x2x3x21 = 2x2x3x3x7Notice that there are 2 2's and a 3 in each factorization: the common prime factors are 2, 2, and 3.
Please tell us your set of numbers.
The common factor is 1.
When two or more numbers each have one or more of the same factors, these factors are called common factors. A single number does not have common factors.
11 is prime, so there are no common factors with it other than 1.
Just 1.
If you mean: 2013, 2014 and 2015 then each of them have 3 different prime numbers as factors
The greatest common factor, or GCF, of any numbers is the largest number that divides evenly into all of the numbers. Here, that would be 1 because both 3 and 5 are prime, and they share no common factors with each other nor 8.
The greatest common factor (GCF) of two (or more) numbers is the greatest factor that divides two numbers. To find the GCF you must work out and list the prime factors of each of the numbers. You will see that the numbers have prime factors in common. Multiply those factors the numbers have in common together and this gives you the GCF for the numbers. eg Number A = 18, Prime factors = 2*3*3 Number B = 24, Prime factors = 2*2*2*3 The Prime factors that A and B have in common are 2 and 3 Multiply them together = 6 6= the GCF of 18 and 24