What is the Greatest Common Factor of 1330 and 1345?

Greatest common factor (GCF) of 1330 and 1345 is 5.

GCF(1330,1345) = 5

We will now calculate the prime factors of 1330 and 1345, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 1330 and 1345.

How to find the GCF of 1330 and 1345?

We will first find the prime factorization of 1330 and 1345. After we will calculate the factors of 1330 and 1345 and find the biggest common factor number .

Step-1: Prime Factorization of 1330

Prime factors of 1330 are 2, 5, 7, 19. Prime factorization of 1330 in exponential form is:

1330 = 2¹ × 5¹ × 7¹ × 19¹

Step-2: Prime Factorization of 1345

Prime factors of 1345 are 5, 269. Prime factorization of 1345 in exponential form is:

1345 = 5¹ × 269¹

Step-3: Factors of 1330

List of positive integer factors of 1330 that divides 1330 without a remainder.

1, 2, 5, 7, 10, 14, 19, 35, 38, 70, 95, 133, 190, 266, 665

Step-4: Factors of 1345

List of positive integer factors of 1345 that divides 1330 without a remainder.

1, 5, 269

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 1330 and 1345. The biggest common factor number is the GCF number.
So the greatest common factor 1330 and 1345 is 5.

Also check out the Least Common Multiple of 1330 and 1345