What is the Greatest Common Factor of 61980 and 61995?

Greatest common factor (GCF) of 61980 and 61995 is 15.

GCF(61980,61995) = 15

We will now calculate the prime factors of 61980 and 61995, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 61980 and 61995.

How to find the GCF of 61980 and 61995?

We will first find the prime factorization of 61980 and 61995. After we will calculate the factors of 61980 and 61995 and find the biggest common factor number .

Step-1: Prime Factorization of 61980

Prime factors of 61980 are 2, 3, 5, 1033. Prime factorization of 61980 in exponential form is:

61980 = 2² × 3¹ × 5¹ × 1033¹

Step-2: Prime Factorization of 61995

Prime factors of 61995 are 3, 5, 4133. Prime factorization of 61995 in exponential form is:

61995 = 3¹ × 5¹ × 4133¹

Step-3: Factors of 61980

List of positive integer factors of 61980 that divides 61980 without a remainder.

1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 1033, 2066, 3099, 4132, 5165, 6198, 10330, 12396, 15495, 20660, 30990

Step-4: Factors of 61995

List of positive integer factors of 61995 that divides 61980 without a remainder.

1, 3, 5, 15, 4133, 12399, 20665

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 61980 and 61995. The biggest common factor number is the GCF number.
So the greatest common factor 61980 and 61995 is 15.

Also check out the Least Common Multiple of 61980 and 61995