What is the Greatest Common Factor of 91981 and 91988?

Greatest common factor (GCF) of 91981 and 91988 is 1.

GCF(91981,91988) = 1

We will now calculate the prime factors of 91981 and 91988, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 91981 and 91988.

How to find the GCF of 91981 and 91988?

We will first find the prime factorization of 91981 and 91988. After we will calculate the factors of 91981 and 91988 and find the biggest common factor number .

Step-1: Prime Factorization of 91981

Prime factors of 91981 are 59, 1559. Prime factorization of 91981 in exponential form is:

91981 = 59¹ × 1559¹

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 91981

List of positive integer factors of 91981 that divides 91981 without a remainder.

1, 59, 1559

Step-4: Factors of 91988

List of positive integer factors of 91988 that divides 91981 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 91981 and 91988. The biggest common factor number is the GCF number.
So the greatest common factor 91981 and 91988 is 1.

Also check out the Least Common Multiple of 91981 and 91988