What is the Greatest Common Factor of 66381 and 66385?

Greatest common factor (GCF) of 66381 and 66385 is 1.

GCF(66381,66385) = 1

We will now calculate the prime factors of 66381 and 66385, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 66381 and 66385.

How to find the GCF of 66381 and 66385?

We will first find the prime factorization of 66381 and 66385. After we will calculate the factors of 66381 and 66385 and find the biggest common factor number .

Step-1: Prime Factorization of 66381

Prime factors of 66381 are 3, 7, 29, 109. Prime factorization of 66381 in exponential form is:

66381 = 3¹ × 7¹ × 29¹ × 109¹

Step-2: Prime Factorization of 66385

Prime factors of 66385 are 5, 11, 17, 71. Prime factorization of 66385 in exponential form is:

66385 = 5¹ × 11¹ × 17¹ × 71¹

Step-3: Factors of 66381

List of positive integer factors of 66381 that divides 66381 without a remainder.

1, 3, 7, 21, 29, 87, 109, 203, 327, 609, 763, 2289, 3161, 9483, 22127

Step-4: Factors of 66385

List of positive integer factors of 66385 that divides 66381 without a remainder.

1, 5, 11, 17, 55, 71, 85, 187, 355, 781, 935, 1207, 3905, 6035, 13277

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 66381 and 66385. The biggest common factor number is the GCF number.
So the greatest common factor 66381 and 66385 is 1.

Also check out the Least Common Multiple of 66381 and 66385