What is the Greatest Common Factor of 64470 and 64485?

Greatest common factor (GCF) of 64470 and 64485 is 15.

GCF(64470,64485) = 15

We will now calculate the prime factors of 64470 and 64485, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 64470 and 64485.

How to find the GCF of 64470 and 64485?

We will first find the prime factorization of 64470 and 64485. After we will calculate the factors of 64470 and 64485 and find the biggest common factor number .

Step-1: Prime Factorization of 64470

Prime factors of 64470 are 2, 3, 5, 7, 307. Prime factorization of 64470 in exponential form is:

64470 = 2¹ × 3¹ × 5¹ × 7¹ × 307¹

Step-2: Prime Factorization of 64485

Prime factors of 64485 are 3, 5, 1433. Prime factorization of 64485 in exponential form is:

64485 = 3² × 5¹ × 1433¹

Step-3: Factors of 64470

List of positive integer factors of 64470 that divides 64470 without a remainder.

1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, 210, 307, 614, 921, 1535, 1842, 2149, 3070, 4298, 4605, 6447, 9210, 10745, 12894, 21490, 32235

Step-4: Factors of 64485

List of positive integer factors of 64485 that divides 64470 without a remainder.

1, 3, 5, 9, 15, 45, 1433, 4299, 7165, 12897, 21495

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 64470 and 64485. The biggest common factor number is the GCF number.
So the greatest common factor 64470 and 64485 is 15.

Also check out the Least Common Multiple of 64470 and 64485