What is the Greatest Common Factor of 77428 and 77442?

Greatest common factor (GCF) of 77428 and 77442 is 2.

GCF(77428,77442) = 2

We will now calculate the prime factors of 77428 and 77442, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 77428 and 77442.

How to find the GCF of 77428 and 77442?

We will first find the prime factorization of 77428 and 77442. After we will calculate the factors of 77428 and 77442 and find the biggest common factor number .

Step-1: Prime Factorization of 77428

Prime factors of 77428 are 2, 13, 1489. Prime factorization of 77428 in exponential form is:

77428 = 2² × 13¹ × 1489¹

Step-2: Prime Factorization of 77442

Prime factors of 77442 are 2, 3, 12907. Prime factorization of 77442 in exponential form is:

77442 = 2¹ × 3¹ × 12907¹

Step-3: Factors of 77428

List of positive integer factors of 77428 that divides 77428 without a remainder.

1, 2, 4, 13, 26, 52, 1489, 2978, 5956, 19357, 38714

Step-4: Factors of 77442

List of positive integer factors of 77442 that divides 77428 without a remainder.

1, 2, 3, 6, 12907, 25814, 38721

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 77428 and 77442. The biggest common factor number is the GCF number.
So the greatest common factor 77428 and 77442 is 2.

Also check out the Least Common Multiple of 77428 and 77442