What is the Greatest Common Factor of 42870 and 42890?

Greatest common factor (GCF) of 42870 and 42890 is 10.

GCF(42870,42890) = 10

We will now calculate the prime factors of 42870 and 42890, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 42870 and 42890.

How to find the GCF of 42870 and 42890?

We will first find the prime factorization of 42870 and 42890. After we will calculate the factors of 42870 and 42890 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 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 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 42890

List of positive integer factors of 42890 that divides 42870 without a remainder.

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

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 42870 and 42890. The biggest common factor number is the GCF number.
So the greatest common factor 42870 and 42890 is 10.

Also check out the Least Common Multiple of 42870 and 42890