What is the Greatest Common Factor of 55981 and 55991?

Greatest common factor (GCF) of 55981 and 55991 is 1.

GCF(55981,55991) = 1

We will now calculate the prime factors of 55981 and 55991, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 55981 and 55991.

How to find the GCF of 55981 and 55991?

We will first find the prime factorization of 55981 and 55991. After we will calculate the factors of 55981 and 55991 and find the biggest common factor number .

Step-1: Prime Factorization of 55981

Prime factors of 55981 are 17, 37, 89. Prime factorization of 55981 in exponential form is:

55981 = 17¹ × 37¹ × 89¹

Step-2: Prime Factorization of 55991

Prime factors of 55991 are 13, 59, 73. Prime factorization of 55991 in exponential form is:

55991 = 13¹ × 59¹ × 73¹

Step-3: Factors of 55981

List of positive integer factors of 55981 that divides 55981 without a remainder.

1, 17, 37, 89, 629, 1513, 3293

Step-4: Factors of 55991

List of positive integer factors of 55991 that divides 55981 without a remainder.

1, 13, 59, 73, 767, 949, 4307

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 55981 and 55991. The biggest common factor number is the GCF number.
So the greatest common factor 55981 and 55991 is 1.

Also check out the Least Common Multiple of 55981 and 55991