What is the Greatest Common Factor of 6690 and 6705?

Greatest common factor (GCF) of 6690 and 6705 is 15.

GCF(6690,6705) = 15

We will now calculate the prime factors of 6690 and 6705, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 6690 and 6705.

How to find the GCF of 6690 and 6705?

We will first find the prime factorization of 6690 and 6705. After we will calculate the factors of 6690 and 6705 and find the biggest common factor number .

Step-1: Prime Factorization of 6690

Prime factors of 6690 are 2, 3, 5, 223. Prime factorization of 6690 in exponential form is:

6690 = 2¹ × 3¹ × 5¹ × 223¹

Step-2: Prime Factorization of 6705

Prime factors of 6705 are 3, 5, 149. Prime factorization of 6705 in exponential form is:

6705 = 3² × 5¹ × 149¹

Step-3: Factors of 6690

List of positive integer factors of 6690 that divides 6690 without a remainder.

1, 2, 3, 5, 6, 10, 15, 30, 223, 446, 669, 1115, 1338, 2230, 3345

Step-4: Factors of 6705

List of positive integer factors of 6705 that divides 6690 without a remainder.

1, 3, 5, 9, 15, 45, 149, 447, 745, 1341, 2235

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 6690 and 6705. The biggest common factor number is the GCF number.
So the greatest common factor 6690 and 6705 is 15.

Also check out the Least Common Multiple of 6690 and 6705