What is the Greatest Common Factor of 4891 and 4905?

Greatest common factor (GCF) of 4891 and 4905 is 1.

GCF(4891,4905) = 1

We will now calculate the prime factors of 4891 and 4905, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 4891 and 4905.

How to find the GCF of 4891 and 4905?

We will first find the prime factorization of 4891 and 4905. After we will calculate the factors of 4891 and 4905 and find the biggest common factor number .

Step-1: Prime Factorization of 4891

Prime factors of 4891 are 67, 73. Prime factorization of 4891 in exponential form is:

4891 = 67¹ × 73¹

Step-2: Prime Factorization of 4905

Prime factors of 4905 are 3, 5, 109. Prime factorization of 4905 in exponential form is:

4905 = 3² × 5¹ × 109¹

Step-3: Factors of 4891

List of positive integer factors of 4891 that divides 4891 without a remainder.

1, 67, 73

Step-4: Factors of 4905

List of positive integer factors of 4905 that divides 4891 without a remainder.

1, 3, 5, 9, 15, 45, 109, 327, 545, 981, 1635

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 4891 and 4905. The biggest common factor number is the GCF number.
So the greatest common factor 4891 and 4905 is 1.

Also check out the Least Common Multiple of 4891 and 4905