What is the Greatest Common Factor of 64455 and 64470?

Greatest common factor (GCF) of 64455 and 64470 is 15.

GCF(64455,64470) = 15

We will now calculate the prime factors of 64455 and 64470, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 64455 and 64470.

How to find the GCF of 64455 and 64470?

We will first find the prime factorization of 64455 and 64470. After we will calculate the factors of 64455 and 64470 and find the biggest common factor number .

Step-1: Prime Factorization of 64455

Prime factors of 64455 are 3, 5, 4297. Prime factorization of 64455 in exponential form is:

64455 = 3¹ × 5¹ × 4297¹

Step-2: 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-3: Factors of 64455

List of positive integer factors of 64455 that divides 64455 without a remainder.

1, 3, 5, 15, 4297, 12891, 21485

Step-4: Factors of 64470

List of positive integer factors of 64470 that divides 64455 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

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 64455 and 64470. The biggest common factor number is the GCF number.
So the greatest common factor 64455 and 64470 is 15.

Also check out the Least Common Multiple of 64455 and 64470