What is the Greatest Common Factor of 12145 and 12155?

Greatest common factor (GCF) of 12145 and 12155 is 5.

GCF(12145,12155) = 5

We will now calculate the prime factors of 12145 and 12155, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 12145 and 12155.

How to find the GCF of 12145 and 12155?

We will first find the prime factorization of 12145 and 12155. After we will calculate the factors of 12145 and 12155 and find the biggest common factor number .

Step-1: Prime Factorization of 12145

Prime factors of 12145 are 5, 7, 347. Prime factorization of 12145 in exponential form is:

12145 = 5¹ × 7¹ × 347¹

Step-2: Prime Factorization of 12155

Prime factors of 12155 are 5, 11, 13, 17. Prime factorization of 12155 in exponential form is:

12155 = 5¹ × 11¹ × 13¹ × 17¹

Step-3: Factors of 12145

List of positive integer factors of 12145 that divides 12145 without a remainder.

1, 5, 7, 35, 347, 1735, 2429

Step-4: Factors of 12155

List of positive integer factors of 12155 that divides 12145 without a remainder.

1, 5, 11, 13, 17, 55, 65, 85, 143, 187, 221, 715, 935, 1105, 2431

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 12145 and 12155. The biggest common factor number is the GCF number.
So the greatest common factor 12145 and 12155 is 5.

Also check out the Least Common Multiple of 12145 and 12155