What is the Greatest Common Factor of 1309 and 1315?

Greatest common factor (GCF) of 1309 and 1315 is 1.

GCF(1309,1315) = 1

We will now calculate the prime factors of 1309 and 1315, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 1309 and 1315.

How to find the GCF of 1309 and 1315?

We will first find the prime factorization of 1309 and 1315. After we will calculate the factors of 1309 and 1315 and find the biggest common factor number .

Step-1: Prime Factorization of 1309

Prime factors of 1309 are 7, 11, 17. Prime factorization of 1309 in exponential form is:

1309 = 7¹ × 11¹ × 17¹

Step-2: Prime Factorization of 1315

Prime factors of 1315 are 5, 263. Prime factorization of 1315 in exponential form is:

1315 = 5¹ × 263¹

Step-3: Factors of 1309

List of positive integer factors of 1309 that divides 1309 without a remainder.

1, 7, 11, 17, 77, 119, 187

Step-4: Factors of 1315

List of positive integer factors of 1315 that divides 1309 without a remainder.

1, 5, 263

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 1309 and 1315. The biggest common factor number is the GCF number.
So the greatest common factor 1309 and 1315 is 1.

Also check out the Least Common Multiple of 1309 and 1315