What is the Greatest Common Factor of 1331 and 1343?

Greatest common factor (GCF) of 1331 and 1343 is 1.

GCF(1331,1343) = 1

We will now calculate the prime factors of 1331 and 1343, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 1331 and 1343.

How to find the GCF of 1331 and 1343?

We will first find the prime factorization of 1331 and 1343. After we will calculate the factors of 1331 and 1343 and find the biggest common factor number .

Step-1: Prime Factorization of 1331

Prime factors of 1331 are 11. Prime factorization of 1331 in exponential form is:

1331 = 11³

Step-2: Prime Factorization of 1343

Prime factors of 1343 are 17, 79. Prime factorization of 1343 in exponential form is:

1343 = 17¹ × 79¹

Step-3: Factors of 1331

List of positive integer factors of 1331 that divides 1331 without a remainder.

1, 11, 121

Step-4: Factors of 1343

List of positive integer factors of 1343 that divides 1331 without a remainder.

1, 17, 79

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 1331 and 1343. The biggest common factor number is the GCF number.
So the greatest common factor 1331 and 1343 is 1.

Also check out the Least Common Multiple of 1331 and 1343