What is the Greatest Common Factor of 61780 and 61798?

Greatest common factor (GCF) of 61780 and 61798 is 2.

GCF(61780,61798) = 2

We will now calculate the prime factors of 61780 and 61798, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 61780 and 61798.

How to find the GCF of 61780 and 61798?

We will first find the prime factorization of 61780 and 61798. After we will calculate the factors of 61780 and 61798 and find the biggest common factor number .

Step-1: Prime Factorization of 61780

Prime factors of 61780 are 2, 5, 3089. Prime factorization of 61780 in exponential form is:

61780 = 2² × 5¹ × 3089¹

Step-2: Prime Factorization of 61798

Prime factors of 61798 are 2, 11, 53. Prime factorization of 61798 in exponential form is:

61798 = 2¹ × 11¹ × 53²

Step-3: Factors of 61780

List of positive integer factors of 61780 that divides 61780 without a remainder.

1, 2, 4, 5, 10, 20, 3089, 6178, 12356, 15445, 30890

Step-4: Factors of 61798

List of positive integer factors of 61798 that divides 61780 without a remainder.

1, 2, 11, 22, 53, 106, 583, 1166, 2809, 5618, 30899

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 61780 and 61798. The biggest common factor number is the GCF number.
So the greatest common factor 61780 and 61798 is 2.

Also check out the Least Common Multiple of 61780 and 61798