What is the Greatest Common Factor of 42870 and 42878?

Greatest common factor (GCF) of 42870 and 42878 is 2.

GCF(42870,42878) = 2

We will now calculate the prime factors of 42870 and 42878, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 42870 and 42878.

How to find the GCF of 42870 and 42878?

We will first find the prime factorization of 42870 and 42878. After we will calculate the factors of 42870 and 42878 and find the biggest common factor number .

Step-1: Prime Factorization of 42870

Prime factors of 42870 are 2, 3, 5, 1429. Prime factorization of 42870 in exponential form is:

42870 = 2¹ × 3¹ × 5¹ × 1429¹

Step-2: Prime Factorization of 42878

Prime factors of 42878 are 2, 11, 1949. Prime factorization of 42878 in exponential form is:

42878 = 2¹ × 11¹ × 1949¹

Step-3: Factors of 42870

List of positive integer factors of 42870 that divides 42870 without a remainder.

1, 2, 3, 5, 6, 10, 15, 30, 1429, 2858, 4287, 7145, 8574, 14290, 21435

Step-4: Factors of 42878

List of positive integer factors of 42878 that divides 42870 without a remainder.

1, 2, 11, 22, 1949, 3898, 21439

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 42870 and 42878. The biggest common factor number is the GCF number.
So the greatest common factor 42870 and 42878 is 2.

Also check out the Least Common Multiple of 42870 and 42878