What is the Greatest Common Factor of 12958 and 12977?

Greatest common factor (GCF) of 12958 and 12977 is 19.

GCF(12958,12977) = 19

We will now calculate the prime factors of 12958 and 12977, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 12958 and 12977.

How to find the GCF of 12958 and 12977?

We will first find the prime factorization of 12958 and 12977. After we will calculate the factors of 12958 and 12977 and find the biggest common factor number .

Step-1: Prime Factorization of 12958

Prime factors of 12958 are 2, 11, 19, 31. Prime factorization of 12958 in exponential form is:

12958 = 2¹ × 11¹ × 19¹ × 31¹

Step-2: Prime Factorization of 12977

Prime factors of 12977 are 19, 683. Prime factorization of 12977 in exponential form is:

12977 = 19¹ × 683¹

Step-3: Factors of 12958

List of positive integer factors of 12958 that divides 12958 without a remainder.

1, 2, 11, 19, 22, 31, 38, 62, 209, 341, 418, 589, 682, 1178, 6479

Step-4: Factors of 12977

List of positive integer factors of 12977 that divides 12958 without a remainder.

1, 19, 683

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 12958 and 12977. The biggest common factor number is the GCF number.
So the greatest common factor 12958 and 12977 is 19.

Also check out the Least Common Multiple of 12958 and 12977