What is the Greatest Common Factor of 61605 and 61615?

Greatest common factor (GCF) of 61605 and 61615 is 5.

GCF(61605,61615) = 5

We will now calculate the prime factors of 61605 and 61615, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 61605 and 61615.

How to find the GCF of 61605 and 61615?

We will first find the prime factorization of 61605 and 61615. After we will calculate the factors of 61605 and 61615 and find the biggest common factor number .

Step-1: Prime Factorization of 61605

Prime factors of 61605 are 3, 5, 37. Prime factorization of 61605 in exponential form is:

61605 = 3² × 5¹ × 37²

Step-2: Prime Factorization of 61615

Prime factors of 61615 are 5, 12323. Prime factorization of 61615 in exponential form is:

61615 = 5¹ × 12323¹

Step-3: Factors of 61605

List of positive integer factors of 61605 that divides 61605 without a remainder.

1, 3, 5, 9, 15, 37, 45, 111, 185, 333, 555, 1369, 1665, 4107, 6845, 12321, 20535

Step-4: Factors of 61615

List of positive integer factors of 61615 that divides 61605 without a remainder.

1, 5, 12323

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 61605 and 61615. The biggest common factor number is the GCF number.
So the greatest common factor 61605 and 61615 is 5.

Also check out the Least Common Multiple of 61605 and 61615