What is the Greatest Common Factor of 61551 and 61563?

Greatest common factor (GCF) of 61551 and 61563 is 3.

GCF(61551,61563) = 3

We will now calculate the prime factors of 61551 and 61563, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 61551 and 61563.

How to find the GCF of 61551 and 61563?

We will first find the prime factorization of 61551 and 61563. After we will calculate the factors of 61551 and 61563 and find the biggest common factor number .

Step-1: Prime Factorization of 61551

Prime factors of 61551 are 3, 7, 977. Prime factorization of 61551 in exponential form is:

61551 = 3² × 7¹ × 977¹

Step-2: Prime Factorization of 61563

Prime factors of 61563 are 3, 20521. Prime factorization of 61563 in exponential form is:

61563 = 3¹ × 20521¹

Step-3: Factors of 61551

List of positive integer factors of 61551 that divides 61551 without a remainder.

1, 3, 7, 9, 21, 63, 977, 2931, 6839, 8793, 20517

Step-4: Factors of 61563

List of positive integer factors of 61563 that divides 61551 without a remainder.

1, 3, 20521

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 61551 and 61563. The biggest common factor number is the GCF number.
So the greatest common factor 61551 and 61563 is 3.

Also check out the Least Common Multiple of 61551 and 61563