What is the Greatest Common Factor of 1378 and 1386?

Greatest common factor (GCF) of 1378 and 1386 is 2.

GCF(1378,1386) = 2

We will now calculate the prime factors of 1378 and 1386, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 1378 and 1386.

How to find the GCF of 1378 and 1386?

We will first find the prime factorization of 1378 and 1386. After we will calculate the factors of 1378 and 1386 and find the biggest common factor number .

Step-1: Prime Factorization of 1378

Prime factors of 1378 are 2, 13, 53. Prime factorization of 1378 in exponential form is:

1378 = 2¹ × 13¹ × 53¹

Step-2: Prime Factorization of 1386

Prime factors of 1386 are 2, 3, 7, 11. Prime factorization of 1386 in exponential form is:

1386 = 2¹ × 3² × 7¹ × 11¹

Step-3: Factors of 1378

List of positive integer factors of 1378 that divides 1378 without a remainder.

1, 2, 13, 26, 53, 106, 689

Step-4: Factors of 1386

List of positive integer factors of 1386 that divides 1378 without a remainder.

1, 2, 3, 6, 7, 9, 11, 14, 18, 21, 22, 33, 42, 63, 66, 77, 99, 126, 154, 198, 231, 462, 693

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 1378 and 1386. The biggest common factor number is the GCF number.
So the greatest common factor 1378 and 1386 is 2.

Also check out the Least Common Multiple of 1378 and 1386