What is the Greatest Common Factor of 61505 and 61521?

Greatest common factor (GCF) of 61505 and 61521 is 1.

GCF(61505,61521) = 1

We will now calculate the prime factors of 61505 and 61521, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 61505 and 61521.

How to find the GCF of 61505 and 61521?

We will first find the prime factorization of 61505 and 61521. After we will calculate the factors of 61505 and 61521 and find the biggest common factor number .

Step-1: Prime Factorization of 61505

Prime factors of 61505 are 5, 12301. Prime factorization of 61505 in exponential form is:

61505 = 5¹ × 12301¹

Step-2: Prime Factorization of 61521

Prime factors of 61521 are 3, 20507. Prime factorization of 61521 in exponential form is:

61521 = 3¹ × 20507¹

Step-3: Factors of 61505

List of positive integer factors of 61505 that divides 61505 without a remainder.

1, 5, 12301

Step-4: Factors of 61521

List of positive integer factors of 61521 that divides 61505 without a remainder.

1, 3, 20507

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 61505 and 61521. The biggest common factor number is the GCF number.
So the greatest common factor 61505 and 61521 is 1.

Also check out the Least Common Multiple of 61505 and 61521