What is the Greatest Common Factor of 12705 and 12711?

Greatest common factor (GCF) of 12705 and 12711 is 3.

GCF(12705,12711) = 3

We will now calculate the prime factors of 12705 and 12711, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 12705 and 12711.

How to find the GCF of 12705 and 12711?

We will first find the prime factorization of 12705 and 12711. After we will calculate the factors of 12705 and 12711 and find the biggest common factor number .

Step-1: Prime Factorization of 12705

Prime factors of 12705 are 3, 5, 7, 11. Prime factorization of 12705 in exponential form is:

12705 = 3¹ × 5¹ × 7¹ × 11²

Step-2: Prime Factorization of 12711

Prime factors of 12711 are 3, 19, 223. Prime factorization of 12711 in exponential form is:

12711 = 3¹ × 19¹ × 223¹

Step-3: Factors of 12705

List of positive integer factors of 12705 that divides 12705 without a remainder.

1, 3, 5, 7, 11, 15, 21, 33, 35, 55, 77, 105, 121, 165, 231, 363, 385, 605, 847, 1155, 1815, 2541, 4235

Step-4: Factors of 12711

List of positive integer factors of 12711 that divides 12705 without a remainder.

1, 3, 19, 57, 223, 669, 4237

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 12705 and 12711. The biggest common factor number is the GCF number.
So the greatest common factor 12705 and 12711 is 3.

Also check out the Least Common Multiple of 12705 and 12711