What is the Greatest Common Factor of 42861 and 42873?

Greatest common factor (GCF) of 42861 and 42873 is 3.

GCF(42861,42873) = 3

We will now calculate the prime factors of 42861 and 42873, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 42861 and 42873.

How to find the GCF of 42861 and 42873?

We will first find the prime factorization of 42861 and 42873. After we will calculate the factors of 42861 and 42873 and find the biggest common factor number .

Step-1: Prime Factorization of 42861

Prime factors of 42861 are 3, 7, 13, 157. Prime factorization of 42861 in exponential form is:

42861 = 3¹ × 7¹ × 13¹ × 157¹

Step-2: Prime Factorization of 42873

Prime factors of 42873 are 3, 31, 461. Prime factorization of 42873 in exponential form is:

42873 = 3¹ × 31¹ × 461¹

Step-3: Factors of 42861

List of positive integer factors of 42861 that divides 42861 without a remainder.

1, 3, 7, 13, 21, 39, 91, 157, 273, 471, 1099, 2041, 3297, 6123, 14287

Step-4: Factors of 42873

List of positive integer factors of 42873 that divides 42861 without a remainder.

1, 3, 31, 93, 461, 1383, 14291

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 42861 and 42873. The biggest common factor number is the GCF number.
So the greatest common factor 42861 and 42873 is 3.

Also check out the Least Common Multiple of 42861 and 42873