What is the Greatest Common Factor of 30956 and 30972?

Greatest common factor (GCF) of 30956 and 30972 is 4.

GCF(30956,30972) = 4

We will now calculate the prime factors of 30956 and 30972, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 30956 and 30972.

How to find the GCF of 30956 and 30972?

We will first find the prime factorization of 30956 and 30972. After we will calculate the factors of 30956 and 30972 and find the biggest common factor number .

Step-1: Prime Factorization of 30956

Prime factors of 30956 are 2, 71, 109. Prime factorization of 30956 in exponential form is:

30956 = 2² × 71¹ × 109¹

Step-2: Prime Factorization of 30972

Prime factors of 30972 are 2, 3, 29, 89. Prime factorization of 30972 in exponential form is:

30972 = 2² × 3¹ × 29¹ × 89¹

Step-3: Factors of 30956

List of positive integer factors of 30956 that divides 30956 without a remainder.

1, 2, 4, 71, 109, 142, 218, 284, 436, 7739, 15478

Step-4: Factors of 30972

List of positive integer factors of 30972 that divides 30956 without a remainder.

1, 2, 3, 4, 6, 12, 29, 58, 87, 89, 116, 174, 178, 267, 348, 356, 534, 1068, 2581, 5162, 7743, 10324, 15486

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 30956 and 30972. The biggest common factor number is the GCF number.
So the greatest common factor 30956 and 30972 is 4.

Also check out the Least Common Multiple of 30956 and 30972