What is the Greatest Common Factor of 945 and 959?

Greatest common factor (GCF) of 945 and 959 is 7.

GCF(945,959) = 7

We will now calculate the prime factors of 945 and 959, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 945 and 959.

How to find the GCF of 945 and 959?

We will first find the prime factorization of 945 and 959. After we will calculate the factors of 945 and 959 and find the biggest common factor number .

Step-1: Prime Factorization of 945

Prime factors of 945 are 3, 5, 7. Prime factorization of 945 in exponential form is:

945 = 3³ × 5¹ × 7¹

Step-2: Prime Factorization of 959

Prime factors of 959 are 7, 137. Prime factorization of 959 in exponential form is:

959 = 7¹ × 137¹

Step-3: Factors of 945

List of positive integer factors of 945 that divides 945 without a remainder.

1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 105, 135, 189, 315

Step-4: Factors of 959

List of positive integer factors of 959 that divides 945 without a remainder.

1, 7, 137

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 945 and 959. The biggest common factor number is the GCF number.
So the greatest common factor 945 and 959 is 7.

Also check out the Least Common Multiple of 945 and 959