What is the Greatest Common Factor of 42878 and 42890?

Greatest common factor (GCF) of 42878 and 42890 is 2.

GCF(42878,42890) = 2

We will now calculate the prime factors of 42878 and 42890, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 42878 and 42890.

How to find the GCF of 42878 and 42890?

We will first find the prime factorization of 42878 and 42890. After we will calculate the factors of 42878 and 42890 and find the biggest common factor number .

Step-1: 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-2: Prime Factorization of 42890

Prime factors of 42890 are 2, 5, 4289. Prime factorization of 42890 in exponential form is:

42890 = 2¹ × 5¹ × 4289¹

Step-3: Factors of 42878

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

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

Step-4: Factors of 42890

List of positive integer factors of 42890 that divides 42878 without a remainder.

1, 2, 5, 10, 4289, 8578, 21445

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 42878 and 42890. The biggest common factor number is the GCF number.
So the greatest common factor 42878 and 42890 is 2.

Also check out the Least Common Multiple of 42878 and 42890