1, 3, 13, 39.
1, 3, 13, 39
Factors of 39: 1 3 13 39 Factors of 57: 1 3 19 57 The GCF of 39 and 57 is 3 The greatest common factor of 39 and 57 is 3.
The factors of 15 are 1, 3, 5, and 15. The factors of 39 are 1, 3, 13, and 39. The factors they have in common are 1 and 3. Therefore, the greatest common factor is 3. You can also determine the greatest common factor from their prime factors. The prime factors of 15 are 3 and 5. The prime factors of 39 are 3 and 13. The prime factors they have in common are a single 3, so the greatest common factor is 3.
The factors of 33 from least to greatest are: 1, 3, 11, 33
The GCF of 39 and 65 is 13. One way to determine the greatest common factor is to find all the factors of the numbers and compare them. The factors of 39 are 1, 3, 13, and 39. The factors of 65 are 1, 5, 13, and 65. The common factors are 1 and 13. Therefore, the greatest common factor is 13. The greatest common factor can also be calculated by identifying the common prime factors and multiplying them together. The prime factors of 39 are 3 and 13. The prime factors of 65 are 5 and 13. The prime factors in common are a single 13, so the greatest common factor is 13.
The GCF is 3.
The GCF is 3.
The GCF is 39.
The GCF is 3.
Factors of 1: 1 Factors of 17: 1, 17 Factors of 39: 1, 3, 13, 39 GCF (1, 17, 39) = 1
Factors of 11: 1, 11 Factors of 17: 1, 17 Factors of 39: 1, 3, 13, 39 GCF (11, 17, 39) = 1
There cannot be a greatest common factor (GCF) of just one number. To be common there need to be at least two numbers. If you find all the factors of two or more numbers, and you find some factors are the same ("common"), then the largest of those common factors is the Greatest Common Factor.