What is the Greatest Common Factor of 42790 and 42802?

Greatest common factor (GCF) of 42790 and 42802 is 2.

GCF(42790,42802) = 2

We will now calculate the prime factors of 42790 and 42802, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 42790 and 42802.

How to find the GCF of 42790 and 42802?

We will first find the prime factorization of 42790 and 42802. After we will calculate the factors of 42790 and 42802 and find the biggest common factor number .

Step-1: Prime Factorization of 42790

Prime factors of 42790 are 2, 5, 11, 389. Prime factorization of 42790 in exponential form is:

42790 = 2¹ × 5¹ × 11¹ × 389¹

Step-2: Prime Factorization of 42802

Prime factors of 42802 are 2, 21401. Prime factorization of 42802 in exponential form is:

42802 = 2¹ × 21401¹

Step-3: Factors of 42790

List of positive integer factors of 42790 that divides 42790 without a remainder.

1, 2, 5, 10, 11, 22, 55, 110, 389, 778, 1945, 3890, 4279, 8558, 21395

Step-4: Factors of 42802

List of positive integer factors of 42802 that divides 42790 without a remainder.

1, 2, 21401

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 42790 and 42802. The biggest common factor number is the GCF number.
So the greatest common factor 42790 and 42802 is 2.

Also check out the Least Common Multiple of 42790 and 42802