What is the Greatest Common Factor of 1242 and 1262?

Greatest common factor (GCF) of 1242 and 1262 is 2.

GCF(1242,1262) = 2

We will now calculate the prime factors of 1242 and 1262, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 1242 and 1262.

How to find the GCF of 1242 and 1262?

We will first find the prime factorization of 1242 and 1262. After we will calculate the factors of 1242 and 1262 and find the biggest common factor number .

Step-1: Prime Factorization of 1242

Prime factors of 1242 are 2, 3, 23. Prime factorization of 1242 in exponential form is:

1242 = 2¹ × 3³ × 23¹

Step-2: Prime Factorization of 1262

Prime factors of 1262 are 2, 631. Prime factorization of 1262 in exponential form is:

1262 = 2¹ × 631¹

Step-3: Factors of 1242

List of positive integer factors of 1242 that divides 1242 without a remainder.

1, 2, 3, 6, 9, 18, 23, 27, 46, 54, 69, 138, 207, 414, 621

Step-4: Factors of 1262

List of positive integer factors of 1262 that divides 1242 without a remainder.

1, 2, 631

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 1242 and 1262. The biggest common factor number is the GCF number.
So the greatest common factor 1242 and 1262 is 2.

Also check out the Least Common Multiple of 1242 and 1262