What is the Greatest Common Factor of 66685 and 66690?

Greatest common factor (GCF) of 66685 and 66690 is 5.

GCF(66685,66690) = 5

We will now calculate the prime factors of 66685 and 66690, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 66685 and 66690.

How to find the GCF of 66685 and 66690?

We will first find the prime factorization of 66685 and 66690. After we will calculate the factors of 66685 and 66690 and find the biggest common factor number .

Step-1: Prime Factorization of 66685

Prime factors of 66685 are 5, 13337. Prime factorization of 66685 in exponential form is:

66685 = 5¹ × 13337¹

Step-2: Prime Factorization of 66690

Prime factors of 66690 are 2, 3, 5, 13, 19. Prime factorization of 66690 in exponential form is:

66690 = 2¹ × 3³ × 5¹ × 13¹ × 19¹

Step-3: Factors of 66685

List of positive integer factors of 66685 that divides 66685 without a remainder.

1, 5, 13337

Step-4: Factors of 66690

List of positive integer factors of 66690 that divides 66685 without a remainder.

1, 2, 3, 5, 6, 9, 10, 13, 15, 18, 19, 26, 27, 30, 38, 39, 45, 54, 57, 65, 78, 90, 95, 114, 117, 130, 135, 171, 190, 195, 234, 247, 270, 285, 342, 351, 390, 494, 513, 570, 585, 702, 741, 855, 1026, 1170, 1235, 1482, 1710, 1755, 2223, 2470, 2565, 3510, 3705, 4446, 5130, 6669, 7410, 11115, 13338, 22230, 33345

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 66685 and 66690. The biggest common factor number is the GCF number.
So the greatest common factor 66685 and 66690 is 5.

Also check out the Least Common Multiple of 66685 and 66690