What is the Greatest Common Factor of 7605 and 7620?

Greatest common factor (GCF) of 7605 and 7620 is 15.

GCF(7605,7620) = 15

We will now calculate the prime factors of 7605 and 7620, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 7605 and 7620.

How to find the GCF of 7605 and 7620?

We will first find the prime factorization of 7605 and 7620. After we will calculate the factors of 7605 and 7620 and find the biggest common factor number .

Step-1: Prime Factorization of 7605

Prime factors of 7605 are 3, 5, 13. Prime factorization of 7605 in exponential form is:

7605 = 3² × 5¹ × 13²

Step-2: Prime Factorization of 7620

Prime factors of 7620 are 2, 3, 5, 127. Prime factorization of 7620 in exponential form is:

7620 = 2² × 3¹ × 5¹ × 127¹

Step-3: Factors of 7605

List of positive integer factors of 7605 that divides 7605 without a remainder.

1, 3, 5, 9, 13, 15, 39, 45, 65, 117, 169, 195, 507, 585, 845, 1521, 2535

Step-4: Factors of 7620

List of positive integer factors of 7620 that divides 7605 without a remainder.

1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 127, 254, 381, 508, 635, 762, 1270, 1524, 1905, 2540, 3810

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 7605 and 7620. The biggest common factor number is the GCF number.
So the greatest common factor 7605 and 7620 is 15.

Also check out the Least Common Multiple of 7605 and 7620