What is the Greatest Common Factor of 91972 and 91988?

Greatest common factor (GCF) of 91972 and 91988 is 4.

GCF(91972,91988) = 4

We will now calculate the prime factors of 91972 and 91988, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 91972 and 91988.

How to find the GCF of 91972 and 91988?

We will first find the prime factorization of 91972 and 91988. After we will calculate the factors of 91972 and 91988 and find the biggest common factor number .

Step-1: Prime Factorization of 91972

Prime factors of 91972 are 2, 22993. Prime factorization of 91972 in exponential form is:

91972 = 2² × 22993¹

Step-2: Prime Factorization of 91988

Prime factors of 91988 are 2, 13, 29, 61. Prime factorization of 91988 in exponential form is:

91988 = 2² × 13¹ × 29¹ × 61¹

Step-3: Factors of 91972

List of positive integer factors of 91972 that divides 91972 without a remainder.

1, 2, 4, 22993, 45986

Step-4: Factors of 91988

List of positive integer factors of 91988 that divides 91972 without a remainder.

1, 2, 4, 13, 26, 29, 52, 58, 61, 116, 122, 244, 377, 754, 793, 1508, 1586, 1769, 3172, 3538, 7076, 22997, 45994

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 91972 and 91988. The biggest common factor number is the GCF number.
So the greatest common factor 91972 and 91988 is 4.

Also check out the Least Common Multiple of 91972 and 91988