What is the Greatest Common Factor of 72870 and 72885?

Greatest common factor (GCF) of 72870 and 72885 is 15.

GCF(72870,72885) = 15

We will now calculate the prime factors of 72870 and 72885, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 72870 and 72885.

How to find the GCF of 72870 and 72885?

We will first find the prime factorization of 72870 and 72885. After we will calculate the factors of 72870 and 72885 and find the biggest common factor number .

Step-1: Prime Factorization of 72870

Prime factors of 72870 are 2, 3, 5, 7, 347. Prime factorization of 72870 in exponential form is:

72870 = 2¹ × 3¹ × 5¹ × 7¹ × 347¹

Step-2: Prime Factorization of 72885

Prime factors of 72885 are 3, 5, 43, 113. Prime factorization of 72885 in exponential form is:

72885 = 3¹ × 5¹ × 43¹ × 113¹

Step-3: Factors of 72870

List of positive integer factors of 72870 that divides 72870 without a remainder.

1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, 210, 347, 694, 1041, 1735, 2082, 2429, 3470, 4858, 5205, 7287, 10410, 12145, 14574, 24290, 36435

Step-4: Factors of 72885

List of positive integer factors of 72885 that divides 72870 without a remainder.

1, 3, 5, 15, 43, 113, 129, 215, 339, 565, 645, 1695, 4859, 14577, 24295

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 72870 and 72885. The biggest common factor number is the GCF number.
So the greatest common factor 72870 and 72885 is 15.

Also check out the Least Common Multiple of 72870 and 72885