What is the Greatest Common Factor of 72270 and 72285?

Greatest common factor (GCF) of 72270 and 72285 is 15.

GCF(72270,72285) = 15

We will now calculate the prime factors of 72270 and 72285, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 72270 and 72285.

How to find the GCF of 72270 and 72285?

We will first find the prime factorization of 72270 and 72285. After we will calculate the factors of 72270 and 72285 and find the biggest common factor number .

Step-1: Prime Factorization of 72270

Prime factors of 72270 are 2, 3, 5, 11, 73. Prime factorization of 72270 in exponential form is:

72270 = 2¹ × 3² × 5¹ × 11¹ × 73¹

Step-2: Prime Factorization of 72285

Prime factors of 72285 are 3, 5, 61, 79. Prime factorization of 72285 in exponential form is:

72285 = 3¹ × 5¹ × 61¹ × 79¹

Step-3: Factors of 72270

List of positive integer factors of 72270 that divides 72270 without a remainder.

1, 2, 3, 5, 6, 9, 10, 11, 15, 18, 22, 30, 33, 45, 55, 66, 73, 90, 99, 110, 146, 165, 198, 219, 330, 365, 438, 495, 657, 730, 803, 990, 1095, 1314, 1606, 2190, 2409, 3285, 4015, 4818, 6570, 7227, 8030, 12045, 14454, 24090, 36135

Step-4: Factors of 72285

List of positive integer factors of 72285 that divides 72270 without a remainder.

1, 3, 5, 15, 61, 79, 183, 237, 305, 395, 915, 1185, 4819, 14457, 24095

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 72270 and 72285. The biggest common factor number is the GCF number.
So the greatest common factor 72270 and 72285 is 15.

Also check out the Least Common Multiple of 72270 and 72285