What is the Greatest Common Factor of 61557 and 61575?

Greatest common factor (GCF) of 61557 and 61575 is 3.

GCF(61557,61575) = 3

We will now calculate the prime factors of 61557 and 61575, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 61557 and 61575.

How to find the GCF of 61557 and 61575?

We will first find the prime factorization of 61557 and 61575. After we will calculate the factors of 61557 and 61575 and find the biggest common factor number .

Step-1: Prime Factorization of 61557

Prime factors of 61557 are 3, 17, 71. Prime factorization of 61557 in exponential form is:

61557 = 3¹ × 17² × 71¹

Step-2: Prime Factorization of 61575

Prime factors of 61575 are 3, 5, 821. Prime factorization of 61575 in exponential form is:

61575 = 3¹ × 5² × 821¹

Step-3: Factors of 61557

List of positive integer factors of 61557 that divides 61557 without a remainder.

1, 3, 17, 51, 71, 213, 289, 867, 1207, 3621, 20519

Step-4: Factors of 61575

List of positive integer factors of 61575 that divides 61557 without a remainder.

1, 3, 5, 15, 25, 75, 821, 2463, 4105, 12315, 20525

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 61557 and 61575. The biggest common factor number is the GCF number.
So the greatest common factor 61557 and 61575 is 3.

Also check out the Least Common Multiple of 61557 and 61575